Posts filed under tanning

Video Series Following the Oak Bark Leather Tanning Process

Over a pretty long period of time, I made a bunch of run-n-gun videos while tanning some leather. At first I was just going to show this experiment of removing sheeps wool by painting the flesh side of the skin with lime paste. Then I figured I’d just shoot easy videos of the whole process with an action cam Well, that took a lot more time than I thought and EIGHTEEN videos later, here is the playlist. The project was oak bark tanning several sheep skins with the hair off and a big chunk of cattle hide.

While there is a lot of “extra” footage in this very pedantic treatment, there is also a benefit to just shooting what I’m doing in real time. This is barktanning as I do it, with all the mistakes, inconveniences and triumphs of shade tree tanning. There are real life lessons here, vs a more idealized instructional approach of discreet steps that may or may not go as planned. If someone wants to learn vegetable tanning with bark and such, this is a very valuable series, even if it takes a while to get through.

The last two videos are Q&A. I gleaned out a bunch of questions from the comments to try to answer. If one person has a question, it is likely that many others have the same question.

Tools You Need to Bark Tan Hides & Skins Into Leather at Home; Traditional Vegetable Tanning

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In this blog post and new video, I cover all the essential tools needed to make good bark tanned leather as well as a few non-essentials. Tanning materials will have to be treated separately and I will try to revisit many of these tools and their making in the future.

Real natural vegetable tanned leather is that which is tanned with tannic acid sourced from plant materials. While there are excellent sources of tannin in not just barks, but in roots, leaves, pods, fruits, nuts and wood, tree barks are the most used sources, thus the common term bark tanning. There are only a few tools and materials that could be considered essential to the process and none are complicated. In fact, if you strip it down to the real essentials, you need very little. Adding a few simple tools will improve your experience though, and in some cases your leather.

Some tools of the Tanner and Currier, most of which are discussed in this article. The slate bladed two handled knife B is especially intriguing. I need to make me one of them.

Some tools of the Tanner and Currier, most of which are discussed in this article. The slate bladed two handled knife B is especially intriguing. I need to make me one of them.


FLESHING KNIFE

The tanner’s knife, or fleshing knife, is the most important multi-tasking tool of the tanner. In a typical vegetable tanning process, I will use this tool for fleshing, dehairing, re-fleshing, scudding, removing excess water and stretching open the skin. It is also handy when re-soaking dried hides to work open dry spots so that they rehydrate faster. Many new models are available on the market, but a lot of home tanners get by well with homemade tools. Read my blog post on fleshing knives, and watch the Fleshing Knives 101 video for more than you probably wanted to know about them. I just received the Wiebe 12” Fleshing knife in the Mail so I can review it for you guys. I like the overall form a lot for general use, and was told by a dealer that it is actually tempered tool steel, not mild steel. Aside from the potentially weak, narrow and probably short tangs, it looks promising, but I haven’t had a chance to use it at all yet. Aside from unknown potential steel/tempering issues and iffy tangs, as a general purpose home tanning knife it seems likely to be a good choice for under 30.00 shipped.

A collection of tanner’s knives

A collection of tanner’s knives


BEAMS

Wood and plastic beams. Left is the outside cur from a log mill and the other is cheap ABS, though PVC would be much better, thicker, more durable and heavier. I haven’t used plastic beams much, but I can see why people might need to use them.

Wood and plastic beams. Left is the outside cur from a log mill and the other is cheap ABS, though PVC would be much better, thicker, more durable and heavier. I haven’t used plastic beams much, but I can see why people might need to use them.

The tanners all purpose scrapping knife is of no use without a beam. For most, a beam around 6 to 6.5 feet long will do well. I’m currently using. 6.25 foot beam, which is just about right for me. It can be of wood or plastic pipe. If wood, it is best to have a smooth work area that is free of knots, large cracks, grain tears or other major blemishes extending at least 18 inches down from the top. I would try to stick with 8” diameter and larger, but to get started, or in emergencies, you can use a smaller diameter beam. If the diameter is very small, you can flatten off the working area to a larger radius. A very small radius results in a small area of contact between the tool and the beam surface. For most vegetable tanning related beam tasks, a larger surface contact between beam and tool is preferable. Large logs should be at least split in half, or even hollowed on the underside to thin them. Most of my old beams were hollowed out on the underside with a hatchet to reduce weight and discourage cracking. Taking the center of the log out by splitting it in half will reduce both the incidence and severity of cracking. Reducing the thickness further will reduce that risk even more. It doesn’t have to look pretty, just chop out some of the wood to form a hollow on the underside.

A good source of nearly ready made beam material are the round sided slab cuts from the outsides of logs removed in milling lumber. You may be able to get some from a local mill, or small custom miller. Check the phone book (under lumber, milling?) or ask about local portable mill owners at your chainsaw dealer or repair shop.

If making a beam out of lumber, choose vertical grain like this over plain sawn face grain if possible as it will be less likely to crack. This is never a choice with a round or split log.

If making a beam out of lumber, choose vertical grain like this over plain sawn face grain if possible as it will be less likely to crack. This is never a choice with a round or split log.

I haven’t done it, but I suspect a pretty good beam could be made by radiusing the working area of a 2x12. I don’t seen any good reason it wouldn’t work. If so, try to choose one that has edge grain on the working face and not face grain. that is to say that the rings of the tree run from about 45 degrees or more toward straight through the thickness of the board. This is usually referred to as vertical grain and will be much less prone to cracking than plain sawn wood faces.

Now that I’m thinking about it, an edge grain (if you can find that good of a board these days) 2x12, backed by another 2x12 could make a pretty nice beam. I would leave a slot in the backing board for a plywood stand, augmented by two 4x4’s firmly attached with lagbolts similar to the arrangement pictured below. For a firmer union, wedges could be used to afix the plywood in the slot.

You can do many different things to put legs on the beam. A good option is to drill large holes, about 2 inches in diameter and plug in round wooden staves for supports. My current beam has two closely spaced boards screwed to the bottom on edge, just far enough apart to slide in a piece of plywood as a support. It works well enough.

Simple support that is easily taken down for transport. I would use 4x4’s next time.

Simple support that is easily taken down for transport. I would use 4x4’s next time.

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DRAW KNIFE AND SPOKE SHAVE

Maintenance tools. The drawknife is probably more versatile and essential than the spokeshave.

Maintenance tools. The drawknife is probably more versatile and essential than the spokeshave.

These tools are used for creating and maintaining, a smooth beam surface. It is ideal to have both. The draw knife is best for major wood removal and repair, and the spoke shave for maintenance and smoothing. You can get away with just one of them though, in which case the draw knife is the more versatile of the two. Draw knives are also handy for peeling tan bark from logs if it is not slipping off easily. If you intentionally shred the bark off of the log in small, thin slices, you may not have to chop it any finer for extracting the tannins.

When shopping for used draw knives watch out for two things, wear on the blade and rounded bevels on the back side. Old draw knives can sometimes suffer severe wear. Look to see that the blade is about the same width it’s whole length. It should also be flat on the back with a bevel on the top side only. Either by long wear, or by mis-sharpening, the back is sometimes not flat. In a very well used knife the back may be subtly dished or rounded off, but if it has an obvious bevel or extreme wear, steer clear.

I would not recommend buying a spoke shave that has only one screw to adjust and no fine adjustment screws. The type shown is common and works well.


WATER AND HOSES

Water is not just a material, it’s a tool for cleaning things off. Skins, tools, boots, hands and tubs need frequent rinsing You will use a lot of water, and the more convenient and available it is the better. I usually use a standard hose end shut off valve to control flow. I like these valves better than most purpose made sprayers, because when opened wide the flow is fairly high, which is nice when you are filling containers with water a lot. If opened only part way, the shut off valve makes a reasonable sprayer for cleaning things off. As far as I have seen, craftsman rubber hoses are the best deal going when they are on sale in the spring, which they usually are.

Better than any sprayer I’ve tried when you want high flow.

Better than any sprayer I’ve tried when you want high flow.

Passable spray pattern and volume if not as good as a purpose made sprayer.

Passable spray pattern and volume if not as good as a purpose made sprayer.


BRUSHES

A stiff cleaning brush will be found almost indispensable for tubs, aprons, beams and tools. You may also need a finer brush to scrub bloom off of the grain side of skins. Bloom is a whitish deposit that forms on the grain surface during tanning. It is more common with certain tanning materials and also when layering or pit tanning is used.

Stiff brushes for cleaning tubs, tools and beams are almost essential

Stiff brushes for cleaning tubs, tools and beams are almost essential

Surface on the right shows bloom deposited in the tanning process. The section on the left has been scrubbed clean with an old hair brush with medium bristles. The dark stain in the center is where the skin floated above the surface of the tan liquo…

Surface on the right shows bloom deposited in the tanning process. The section on the left has been scrubbed clean with an old hair brush with medium bristles. The dark stain in the center is where the skin floated above the surface of the tan liquor :-/


PROTECTIVE CLOTHING

BOOTS: Rubber boots are very nice to have if you do a lot of tanning. If you don’t wear them, the hide will inevitably drip all over your feet as you stand at the beam working.

GLOVES: I tanned without gloves for years, but I love my elbow gloves now. Don’t bother with dishwashing gloves, or any other short gloves. You will inevitably reach into a solution and they will fill with smelly liquid. I use these affordable Atlas gloves, which have held up okay. When they die, I may invest in a more heavy duty glove.

APRON: I would avoid buying very cheap aprons. I am still using the same two heavy duty black, rubberized cloth aprons that I bought used at a yard sale over 20 years ago. You can make one from a sheet of vinyl or plastic of some kind, or tie a trash bag around your waist, but if you tan a lot, the protective gear is really nice to have. Hip waders are great if you already own them.

Non-Essentials, but so nice to have!

Non-Essentials, but so nice to have!


CONTAINERS

Vegetable tanning requires certain kinds of containers. Materials that can be safely used for all the processes are wood, plastic and rubber, ceramic, stainless steel and enamel ware. I use galvanized tubs, but only if there is no rust at all on them, and for liming and rinsing only. Aluminum I’ve used for rinsing only. I know aluminum and ashes don’t mix well but I don’t know about lime. While I have no idea if aluminum is safe for tanning liquors, I’ve avoided it. Anything that rusts is out of the question for all processes related to vegetable tanning except for dyeing the skin black. Any rust or iron will darken the skin permanently.

The common rectangular plastic storage tubs with lids are the most versatile. Choose designs that can be rained on without funneling any water into the tub if possible. Some do not have that kind of overhang on the lids, or have holes of some kind o…

The common rectangular plastic storage tubs with lids are the most versatile. Choose designs that can be rained on without funneling any water into the tub if possible. Some do not have that kind of overhang on the lids, or have holes of some kind on the edges. All of these others also get used, but none are particularly better than rectangular tubs.

The ubiquitous 5 gallon plastic buckets are handy to have around for various uses, but tanning anything over the size fur bearers in buckets is unpreferable. Large rectangular plastic storage tubs of 15 gallons and up are very useful as are other large tubs of various sorts. I have used wooden wine barrels cut in half quite a lot. They look really great, but aesthetics aside, they have their down sides. Wooden barrels need to be kept filled with water, or they dry out and fall apart. Since they need to be full of water, they breed mosquitoes unless you dump them regularly and they are quite heavy when full. You can tan hides up to the size of deer in half wine barrels very easily and sometimes large hides if you get creative. The size of the container should be adequate for the size of skins you are tanning. Without getting into specific details, an 18 to 20 gallon tub is adequate for deer, goat and similar sized animal skins. I’ll usually cut cattle and other large hides into sides and bellies, and those pieces can be tanned in a half wine barrel or large rectangular tub easily enough.

Rectangular tubs are an advantage over round ones, when layering, a technique where you put layers of shredded bark between layers of hide and let it sit for a month or three. I can layer a deer hide well in an 18 or 20 gallon tub, by carefully folding it up with layers of bark between all the folds, but if layering a larger hide, or even a very large deer skin, you’ll need to size the tub up. For liming, rinsing, or tanning the skins in liquors, round containers have the slight advantage in being easy to stir, but that is not important enough to favor buying them over the more versatile rectangular tubs. Use what you have or can get cheap or free if it works, but if you buy something storage tubs with lids are probably the best all around. If you are tanning cattle, elk, moose, horse or buffalo skins, and want to keep them whole (not a very good idea unless you really need it that big), start keeping your eye peeled for larger containers. However, too large is too large. You don’t want to have to use excess amounts of liquid to tan, rinse or lime a hide.


BARK CHOPPING

Primitive and slow, but effective enough. The benefits are that it makes you slow down and chill out, and it’s good hatchet practice.

Primitive and slow, but effective enough. The benefits are that it makes you slow down and chill out, and it’s good hatchet practice.

Some materials, like sumac leaves are easy to use, but you will generally have to cut up barks, roots and woods. I have almost always used a hatchet on a block of wood. I lay out a tarp to catch the chips and start hacking away. You could use a small axe, but for most people, an average sized hatchet is a good weight to start with. A heavy hatchet or axe can lead to repetitive strain injuries like carpal tunnel much faster. Just ask my tendons about that.

Hatchets can also be used to “raze” off the outer dead portion of the bark, which was sometimes so removed in traditional tanning as it was considered unnecessary or even injurious to the leather.

Chipper/shredder machines can be very effective. Garden chippers are often under-powered for thick heavy bark, but they are nice when they work. If necessary, you can break the material up into smaller pieces, or try shredding it while still fresh and softer. If there is a lot of rust in the chipper, it could contaminate and darken your liquor. Consider running some branches and leaves through the unit to clean it out.


COOKING POTS

It is possible to extract the tanning materials from plants with cold leaching, but it is much faster to cook it out. Even though I don’t know that it isn’t safe, I have always avoided aluminum. That is easy for me to do though, because I have large stainless steel pots from 3 to 5 gallons. Enamel pots could work, but be sure there are no rusty spots where the enamel has chipped away. Copper was used at one time, but large copper containers are expensive and uncommon. Large thin walled stock pots with thin bottoms can be very cheap and are fine for cooking bark, but will easily burn food if you are not careful. Try to get at least 16 quart and preferably 20 quart or larger. I find large stock pots like this to be indispensable tools in my lifestyle and they are a lifetime investment. When shopping key points to look at are thickness, build quality (especially handles) and steel quality. Some stainless imports are made of inferior metal. Read reviews carefully. When I won some fancy all clad cookware in a contest, I sold it on ebay and bought a Tramontina stock pot, which I’m happy with.

A 3 gallon stainless stock pot. Get 20 quarts or larger if you can afford it or better, repurpose a stainless beer keg.

A 3 gallon stainless stock pot. Get 20 quarts or larger if you can afford it or better, repurpose a stainless beer keg.

You can also modify an old beer keg, which many home brewers do for cooking beer mash. Full sized Kegs are 15.5 gallons and a 1/4 keg is 7.5 gallons.

I also own a large pool filter housing that must hold around 25 to 30 gallons. I set it up with a valve and cook large batches of canning jars and bark in it. I have never seen a comparable one. In most units the lid is nearly as tall as the body, making them of limited use.

My pool filter housing bark boiler, aka the MEGA CANNER.

My pool filter housing bark boiler, aka the MEGA CANNER.


Happiness is tan liquor on tap. It doesn’t get any better than this folks.

Happiness is tan liquor on tap. It doesn’t get any better than this folks.

SLICKING TABLE OR BOARD

To use the following two tools, the slicking iron and slicker, you need a large flat surface of some kind. The skin is stretched, smoothed and flattened with this trio. These are only used if you want to dry the skin smooth and flat. If the hide is to be softened you dry it in some way that is less involved. A good technique for drying hides flat is to paste them down to the board with fat applied to the flesh side. This technique allows us to finish the grain out perfectly smooth and then leave it on the board to dry slowly. Just put it where your chickens can’t walk on it! You can also nail the skin to a wall to stretch it, or lace it into a frame, but for leaving hides well flattened and finished, you probably can’t beat the slicker and slicking Iron on a smooth slab. If you are doing thick skins, you can get away with something that has a rough surface, such as unfinished plywood. When working thin skins on a slab, the surface should be smooth or the texture of the surface will show through on the grain, much like the technique of rubbing a piece of paper placed over a textured surface with pencil or charcoal. I use plywood and a large slab of thick salvage plastic. Traditionally, stone tables have been used. If you run across a large surface that is very smooth, water resistant and 4 feet or more wide, grab it.

A large sheet of salvaged structural plastic that I use as a slicking board.

A large sheet of salvaged structural plastic that I use as a slicking board.

Cattle leather oiled and pasted out to boards to dry with the slicker. When working with thick skins, the board texture will not show through. When finishing thin skins, you will need a smooth surface unless the skin is to be softened later, or the …

Cattle leather oiled and pasted out to boards to dry with the slicker. When working with thick skins, the board texture will not show through. When finishing thin skins, you will need a smooth surface unless the skin is to be softened later, or the wood grain will show through on the hide’s grain surface.

The skin can be pasted to the board with a coating of fat on the flesh side. It will stick well enough if it is dried slowly. When pasting thick skins to boards, you must use wood for thick skins or the skin may mold from drying too slow. For thin skins you can get away with pasting them to a non breathable surface like plastic, but make sure they still dry out within a couple of days. I use this technique a lot. I also often use it if I’m going to use the graining board to soften the skin (see below), but in that case, it is okay to use a rough piece of plywood, because the grain is going to be wrinkled and reworked anyway so the texture of the board showing through the skin is of no consequence.


SLICKER

This tool is usually made of stone or glass and you can make your own with a piece of slate. it is a slab of hard material, with one rounded smooth edge, and and smooth rounded corners. A handle is nice, but not necessary. The tool is used to smooth and even the grain side of the skin and to paste it down onto a slicking table or board with fat for slow drying. You could probably have a glass shop make you one out of a 3/8” glass. A shop that works with stone tiles should be able to make you one as well, or at least cut a slab for you if they don’t already have some spare tiles of the right size. If you want to make one, cut a piece of slate or other clean hard stone and grind the edge round on a slab of cement or sand stone. Use water as a lubricant. If the stone is hard, add sand with water to make a slurry. Slate is fairly soft and easy to work. This method will even work with hard stone or glass if you are patient. It can be finished and polished with diamond sharpening hones and/or sand paper. A belt grinder would also be very handy, but the dust will mess up your lungs. Silicosis fibrosis anyone? Glass grinders are lubricated with water to prevent dust. You can also still buy slickers new, since a few leather workers use them for polishing. I have also used hardwood and moose antler in a pinch.

Size should be around 4x5 inches and 1/4 inch or more thick, with the long edge being the rounded working edge.

Vintage slickers from the museum area of the Muir McDonald Tannery in Dallas Oregon, now sadly closed. Both are slate. In the tool on the left, it appears that there may be screws for clamping the slate into the handle.

Vintage slickers from the museum area of the Muir McDonald Tannery in Dallas Oregon, now sadly closed. Both are slate. In the tool on the left, it appears that there may be screws for clamping the slate into the handle.

Glass plate in a leather working machine. This partly replaced and augmented the slicker. This may be the scariest machine I’ve ever seen in operation. Muir McDonald Tannery, used to polish the grain of tooling leather.

Glass plate in a leather working machine. This partly replaced and augmented the slicker. This may be the scariest machine I’ve ever seen in operation. Muir McDonald Tannery, used to polish the grain of tooling leather.

Smoothing the grain and flattening.

Smoothing the grain and flattening.

Home made slate slicker 1/4 inch thick and a slab of repurposed jade with the edges polished

Home made slate slicker 1/4 inch thick and a slab of repurposed jade with the edges polished

ideal slicker edge is evenly radiused and polished.

ideal slicker edge is evenly radiused and polished.

The slicker at work dealing with wrinkly edges. This tool is always used with fat as a lubricant.

The slicker at work dealing with wrinkly edges. This tool is always used with fat as a lubricant.


SLICKING IRON

My current ideal slicking iron prototype. I would favor a thick blade. This is a tool where weight and rigidity can be advantageous.

My current ideal slicking iron prototype. I would favor a thick blade. This is a tool where weight and rigidity can be advantageous.

This tool is similar to the slicker in size and shape, but it is a metal scraper with a dull edge. It is used on the flesh side of the skin to even out wrinkles and smooth and stretch the skin out toward the edges, before turning it over to use the stone or glass slicker. The slicking iron should not be super wide, about 5 inches wide at most. If I made one to my specifications right now, it would as in the diagram. It would have a very, slight radius across the working edge. I would also add a generously sized hardwood handle that is slightly drop shaped in cross section, copper riveted, and saturated in raw linseed oil. Regular carbon steel is okay to use, but always check it for rust and clean before using. Never leave it resting on the skin.

A serviceable homemade sicking iron and a cheap dough scraper. The dough scraper is on the thin side, is already rusting and should be modified to narrow it. It is probably better to check in with local scrap yards, metal fabricators and sheet metal…

A serviceable homemade sicking iron and a cheap dough scraper. The dough scraper is on the thin side, is already rusting and should be modified to narrow it. It is probably better to check in with local scrap yards, metal fabricators and sheet metal workers.

Dough scrapers can be used if modified. Most dough scrapers are wide and could stand to have an inch or more removed from their width to make them 4.5 to 5 inches wide, which you can do with a hacksaw and files. Use a file to sharpen and modify. The corners should be rounded off well to a 1/4 inch radius and the whole thing sharpened from both sides to form a fairly obtuse edge (not too thin) and then dulled enough that it won’t cut the skin. The edge should be of such a dullness that it will easily grab the skin and pull it when the tool is used, but will not cut or gouge it. If shopping for one, look at reviews to make sure it is not too thin. Cheap scrapers will bend under the high stress applied to this tool under normal use. I bought this one and it is barely thick enough. It is also already showing some rust as cheap stainless steel is prone to do. Here are a few that look like they may be thick enough, but it’s hard to say until you see them in person. pizza cutter, RSVP, OXO. Keep in mind that they will still be better if modified by narrowing them, so dropping by your local sheet metal worker or metal fab shop first is probably smarter. They usually have lots of scrap around and all the tools to make something like this quickly, minus the handle. If you have a file, a drill and a saw to cut a kerf in a wooden handle, just have them cut out a slab for you and do the rest yourself. If you have a good metal salvage yard around, look there for scrap stainless.

This paunchy spot was eventually flattened completely by persistent work with the slicking iron and slicker.

This paunchy spot was eventually flattened completely by persistent work with the slicking iron and slicker.

You may very well be able to use some sort of household item or kitchen tool in place of the slicking iron, for instance a thick stainless spatula. You can also do some of this work on the beam with the fleshing knife, like stretching the skin our toward the edges. At times though you may wish you had the slicking iron for dealing with tough wrinkles and lumps in heavy hides. I would definitely say it is more necessary and useful when dealing with big thick skins. It’s not a tool you have to have to start tanning. You will know when you need it. Checkout this image of Talcon working down a paunchy spot in a bark tanned bull hide. That spot ended up totally flat in the end. This is the kind of application where the slicking iron shines.

The same hide flattened, smoothed, pasted with fat to the board and left to dry slowly.

The same hide flattened, smoothed, pasted with fat to the board and left to dry slowly.


OTHER OPTIONS FOR STRETCHING AND DRYING

If you do not have a slicking table, and need to stretch a skin out to dry, you can use a frame with ropes. Cut many holes, parallel to the edge and lace the skin evenly and tightly. This will not always remove wrinkles and paunchy spots like slicking out on a flat surface can. Framing a hide is also a lot of work and wastes skin around the edges. Similarly, you can stake the skin out flat just off the ground. A better option than both for most people will be to nail the skin out to a large board or wall. Use hot dipped galvanized box nails if you can. Any nail that will rust is not recommended and nails that are already rusty are a sure way to leave black stains on your hide.

Horse sides framed for drying. Not the best solution in terms of labor and material conservation. It also does not provide the best options for flattening and smoothing the skin.

Horse sides framed for drying. Not the best solution in terms of labor and material conservation. It also does not provide the best options for flattening and smoothing the skin.


PALM AND ARM BOARDS

Old engraving of a Currier at work with an arm board. If you look closely, you can see that the artist illustrated the wooden teeth on the sole of the board

Old engraving of a Currier at work with an arm board. If you look closely, you can see that the artist illustrated the wooden teeth on the sole of the board

Skins can be softened by rolling on a table with the hands and forearms. These tools are used to make that job easier and work the skin a lot harder.

The soles are designed to grip the skin’s surface. One type has a wooden face with ridges carved into the sole from side to side for when the tool rides on the flesh side of the leather. Boards with cork glued to the soles are used when the tool will contact the grain side.

There are two basic sizes, a hand board, sometimes called a pommel, and an arm board. The hand board is short, 8” or less, with a strap that goes over the hand. The arm board rests along the forearm and has a strap at the back and a peg at the front for a handle. The difference is size and scope of work. Any home tanner ought to do fine with hand boards.

If the skin is worked folded grain side to grain side, the result is a pleasing wrinkled grain surface since the grain is crushed and compressed. The process of creating that grain effect is called graining, thus the term graining board. In this case, the sole of the tool touches the flesh side only and the teeth cut into the wood provide excellent grip.

Postion for graining process. Note the ridged graining board contacts the flesh side only.

Postion for graining process. Note the ridged graining board contacts the flesh side only.

Surface produced by graining

Surface produced by graining

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If a board is used with the skin folded flesh side to flesh side, the grain surface is left smooth because it is stretched instead of compressed. The cork soled board is used in this case to prevent denting and damage to the grain surface.

An antique cork faced arm board from the Muir McDonald Tannery in Dallas Oregon. Note that the cork is partially worn off on the front of the tool

An antique cork faced arm board from the Muir McDonald Tannery in Dallas Oregon. Note that the cork is partially worn off on the front of the tool

Fancy Antique cork soled board.

Fancy Antique cork soled board.


MALLET

In some cases, we may want the skin to be compressed and hardened, not softened and broken loose. The tool for this is a wooden mallet with a polished face, which is used to condense the leather when it’s in a damp, but not wet state. The face can be close to flat, but the edges have to taper off and round out gently. If you are leaving any kind of dents in the skin, then you need to either hit the leather flatter, or refine the edges. The leather should be smooth when finished. Use the heaviest wood you can, mine is probably iron wood and is extremely dense. Polish the face to a gloss finish. In the past, both Iron and brass/bronze mallets have been used, but make sure they are very clean and polished, with zero rust or oxidation. Even so, you are risking staining the skin with a steel hammer, so I recommend sticking with wood.

The mallet for compressing and firming leather should be dead smooth. Use the densest wood available. The hide underneath in the foreground has been pounded leaving it about 1/3 thinner, much denser, stiffer and polished. Otherwise, it was exactly t…

The mallet for compressing and firming leather should be dead smooth. Use the densest wood available. The hide underneath in the foreground has been pounded leaving it about 1/3 thinner, much denser, stiffer and polished. Otherwise, it was exactly the same as the top piece.


STAKE

This is a dull metal blade set into a post that is used for softening and breaking open the fiber of skins. They are useful if you are trying to get skins really soft and for working furs. Unless you are doing one of those two things, it’s not a very essential tool. I find them more useful in braintanning buckskin and working furs of any kind. The post can be permanent or in a stand of some kind for portability. The blade should be rounded at the corners and they usually have at least a very slight radius. The width of the blade can vary. For any kind of large skins, a wider blade would be better. 5.5 inches with the edges rounded to a 1/4 inch radius and a very, very slight radius to the whole edge would be good for general home tanning work of all kinds. A lot of dough scrapers are 6 inches wide, so that might be a good source of material for a blade. It should be stainless if possible, so you can leave it wet or in the weather. Use stainless steel screws as well.

A simple portable stake used for classes. A fixed stake or one on a heavy base is better if you’re going to use it a lot.

A simple portable stake used for classes. A fixed stake or one on a heavy base is better if you’re going to use it a lot.

Use stainless steel screws

Use stainless steel screws

A good stake blade design for the home tanner.

A good stake blade design for the home tanner.

This blog post and similar content is informed by almost 30 years of research, experience and communication with other tanners. You can support my efforts to bring back and preserve these traditional self reliance skills and arts by sharing content to friends, forums and social media, with general financial support on patreon.com/skillcult, or with one time donations using the link in the side bar. I also now keep separate accounts for earmarked donations toward research in tanning and apple/plant breeding. If specified, donated funds will be used for things like tools and materials, and outside labor solely related to either endeavor. Thanks for reading :)

The Tanner's Knife, An Essential Multipurpose Tanning Tool for Fleshing, Dehairing, Scudding and Frizzing

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The fleshing knife as it is commonly known, but probably more appropriately known as a tanning or tanner’s knife, is the primary tool of the tanner. This versatile knife can be used for fleshing and re-scraping the flesh side of the skin, de-hairing, removing the grain (frizzing), scudding out liquids to flush unwanted moisture and loose material from inside the skin structure, moving the hide on the beam and trimming the edges of the skin. While there are specialized two handed knives for some of these tasks, they can all be performed with the same tool if it’s within certain design parameters, which is what will serve most home tanners best. In this Blog post and video, I go over some of the different types, both commercial and homemade with some tips on weight, length, styles, making your own, and other such things.

The focus here will be on the home tanner working on beams about 8 to 12 inches wide. Keep in mind that most new models are designed by and for fur trappers, most of whom do not do a lot of general tanning work. The amateur tanner can get by with tools that are much less than ideal, so there is no need to overthink the problem too much, or find the perfect tool just to get started. You can always upgrade later if you want to.

Length: The typical professional tanners knife of the European style is quite long and not really best suited to the home tanner. Samples I have range from 3 to 3-3/8 inch wide. 16 inches is a typical working edge length. These long knives were often used on very wide beams with shallow curves. The strong, experienced men using these tools, combined with the large area of contact formed between the gently curved edge of the tool and the wide beam, would make for very efficient and quick work. I think the ideal length for home tanners working a variety of skins on narrower beams is about 20” long in total with 11” working edge and 4.5” handles. A working edge up to 12 inches and down to 10” with 4.5 inch handles is also fine. With such a length, the tanner can comfortably do all manner of work from very large hides, down to fur skins. Wider beams require wider knives and/or the edge of the tool may need to protrude out in front the handles. I would not recommend working edges much smaller than about 10 inches, and then only out of necessity. It is not just the working edge though, but also the space between the handles, which allows for comfortable work.

Styles: Nearly all traditional styles seem to be curved. The classic European style of tanning knife that is most common is wide, curved and dished. The compound curves of the cup and the arc combine to strengthen the tool, allowing it to be fairly thin, and yet still very rigid. The concavity of the underside seems to offer some geometric advantage in scraping. The concavity also means that the tool can be used flat on the hide without rubbing on it, which I suspect might be part of the impetus for the design, although I have rarely used them that way. Professional tanners who worked hides day in and day out would probably be able to get away with doing things that the rest of us can’t, such as using sharper tools at lower angles. These traditional, wide, dished knives are very nice to use, though if I were designing one from scratch for home tanners who are doing many different types of skins and tasks, I would probably make it considerably narrower than they usually are and no wider than 3 inches. The back edge is sometimes kept very sharp and can be used for tough spots, gaining access under tough membranes, or as a sharp slicing knife for trimming the skin during fleshing. I have also read of tanners filing teeth into the back of the knife so it can be used to pull skins up the beam to reposition them for scraping without using the hands. You can do this maneuver on small skins without cutting teeth in the back of the tool, and I do, but on large heavy hides, I can see why they would make this modification. The option is to let go of the tool with one or both hands to readjust the skin on the beam as each area is worked over, which is much slower.

Traditional style knives. From the top down, A cheaper modern version @ 16”, W.H.Horn & Bro’s England 15” edge-3-3/8” wide- 27” total length, Horn Brand cut down to a 12 inch blade by someone who probably thought 16 inches was too long. I just saw a…

Traditional style knives. From the top down, A cheaper modern version @ 16”, W.H.Horn & Bro’s England 15” edge-3-3/8” wide- 27” total length, Horn Brand cut down to a 12 inch blade by someone who probably thought 16 inches was too long. I just saw a picture online of one cut down exactly the same way. It even had a similar handle. Just goes to show, those super wide tools are for use by professionals in a professional setting and not suited to everyone and every task.

W.H. Horn fleshing knife from ends.jpg

Other tools are narrower and usually thicker, sometimes with only one working edge. This type is good for home tanners with a surprising number of models and brands available new. Newer ones are often sharpened on the back as well and many are fairly flexible compared to older ones I’ve seen.

Width: A versatile knife for the home tanner would probably be anywhere from 1.5 to 3 inches wide. Though still very usable, extremely wide tools can be less stable when it is required to push very hard as is sometimes necessary when graining (frizzing) un-limed buckskins or fleshing very difficult skins. My two favorite tools currently are a shortened traditional cupped knife that is worn down quite a lot to about 2.5 inches wide. More relevant though, is that the concave curve, which is the main working edge, has been worn back closer to the handles, making it more stable to use when pushing very hard. A full width knife however is fine as well, but if I designed one from scratch it would probably be under 3 inches wide.

Another favorite tool I have was forged out of a wagon leaf spring and is about 3/16 inch thick and 1.5” wide, which makes for a durable, versatile tool of a good weight. Tools as narrow as 1 inch can be fine too depending on material and use. There is a type of knife that is very thin and flexes to conform to the curve of the beam, but I have never had a chance to examine, let alone use one. If the tool is both narrow and short, the handles may get in the way, necessitating the use of a very narrow beam.

For whatever combination of reasons, these are the tools I’m most likely to grab first. The. traditional wide knife is worn back, making the edge closer in line with the handles, which is more stable when doing hard work. The second is forged from a…

For whatever combination of reasons, these are the tools I’m most likely to grab first. The. traditional wide knife is worn back, making the edge closer in line with the handles, which is more stable when doing hard work. The second is forged from a wagon leaf spring, 3/16” thick, 20” long, 1.5” wide. The working edge is only 9.25”, but there is plenty of working room between the handles. If I made a knife like this again it would have a 10” or 11” working edge. the handles are antler.

If the tool is too short and narrow, you will not be able to use it on wide beams like this one, because the handles will interfere. It also doesn’t give you a lot of real estate to work with on the edge. If the hands are held too close together, it…

If the tool is too short and narrow, you will not be able to use it on wide beams like this one, because the handles will interfere. It also doesn’t give you a lot of real estate to work with on the edge. If the hands are held too close together, it can become less ergonomic to work. The wider your shoulders, the wider the tool could be.

Thickness and weight: Wider tools are generally relatively thin in order to avoid excessive weight. Narrower tools are often a lot thicker, though many of the newer, higher end tools are thinner than the older ones were. A range of weights are usable, but tools can be both too light and too heavy in my opinion. I’d much rather a tool was too light, but some weight offers stability and the advantage of momentum in some scraping processes.

Straight v.s. curved: Straight tools are perfectly serviceable. I do prefer a curve and would never design the perfect tanning knife with straight edges, but if material is available to make a straight tool, I would not hesitate. I’ve used straight planer blade tools for countless hours and endless square feet of hide scraping. Once I started using a curved tool, I was sold instantly, but I could go back easily enough. I think the main advantage of curved tools is that it is easier to incorporate tilt and slide techniques in scraping.

Tilting the knife edge slightly off of perpendicular is an important refinement to scraping technique. Imagine a straight edged fleshing knife held at a slight angle by putting one hand slightly away from you, and one hand slightly back toward you. If the tool is pushed straight forward while tilted askew like this, there is a slight advantage in scraping, something akin to a slicing action, though not quite the same. You can achieve the same effect with any cutting edge in wood, such as a plane, spokeshave, knife or draw knife by tilting it. This subtle difference in technique can have a large effect. Curved tools, when held slightly to the left or right, create this effect automatically without having to hold the tool askew at all, or at least less so.

Sliding the tool side to side very slightly in a slicing motion as the tool is pushed forward is another very important subtle refinement of the hide scrapers art. Combined with tilt, it is even more effective. Since tilt is already built in to a curved knife, it is easier and more ergonomic to achieve this combination of techniques when using a knife with a curved edge.

The radius of the curve should not be too drastic. Shown are some curved tools to give you an idea of what some look like. A factor in degree of curvature, or lack of curvature, is that the radius of the beam combined with the radius of the knife determine how much of the tool contacts the beam. That contact width has everything to do with how much work is done with each stroke and how hard it is to do that work. In one extreme case, you might be scraping off the grain from the tough neck skin of a deer, which is going to require a narrow area of contact. If the width of contact between beam and knife is wide, you will have a very tough time of it. Still, with an 8 inch beam and a very moderately curved knife, you should still be okay. For general work, I prefer a beam around 12 to 14 inches wide with a moderate curve. Coupled with a curved knife, that makes for a reasonably wide area of contact resulting in efficient work for most processes. If I used a 6 inch wide beam with a high crown and a straight tool, I would be at my work much too long when doing most of the relatively easy processes that I engage in most often, such as fleshing and dehairing, simply because the strips I would be scraping off would be so narrow.

If a straight line is drawn from one corner of the edge to the other, the distance from that straight line to the tool edge at the center of the tools are as follows Top to Bottom:9” long, 5/16” to edge,15” long, 3/4”16” long, 3/4”12” long 1/2”Botto…

If a straight line is drawn from one corner of the edge to the other, the distance from that straight line to the tool edge at the center of the tools are as follows Top to Bottom:

9” long, 5/16” to edge,

15” long, 3/4”

16” long, 3/4”

12” long 1/2”

Bottom tool, not measured

The bottom line is that I prefer a moderately curved tool for general work. The curve I would start with as a prototype for testing would arc in an even radius, with a rise of about 3/8” at the center of the tool on an 11” blade.

Material: The cheapest knives are made from cheap mild steel which cannot be tempered to keep an edge. This type of budget tool can work, but they are not preferable and will require more frequent sharpening. Better knives are made of tool steel and tempered to take and hold an edge. If at all possible, I would recommend something that will hold an edge. Stainless tools are nice to have when working around water and salt, but If tools are taken reasonable care of, regular carbon steel is fine. Planer blades, discussed below are rust resistant, but not stainless. For making tools at home, you can use a number of common pieces of steel.

Miscellaneous steel items that could be used to make a tanner’s knife. Left to right, a set of car leaf springs, section of leaf spring, chainsaw bar, lawnmower blade, planer blades

Miscellaneous steel items that could be used to make a tanner’s knife. Left to right, a set of car leaf springs, section of leaf spring, chainsaw bar, lawnmower blade, planer blades

Leaf springs from cars are good. If possible, find a set that is narrow. Almost every junk car has a full set of springs under it waiting to be salvage with the removal of a few bolts. The steel is temperable and already hard enough to work well enough. If you can find a narrow spring, you could grind out a tool and retain the temper if you are careful and patient.

Chainsaw bars seem like a great source of steel of a good thickness. I’ve never used them, but I understand they are carbon steel of some kind, and would already be hardened and tempered to hold their shape under hard use. Once worn, they are of no use on a chainsaw and should not be hard to find in any rural area in the states.

Lawnmower blades: are fairly common and seem like reasonable stock to work with. They have a propeller twist which would have to be removed, necessitating heating, forging and preferably re-hardening and tempering afterward.

Large files are a good source of tool steel,and could be used. I would grind or file out all the teeth though. They are too hard as is, so making a good tool with one would entail at least heating to anneal (soften), grinding to shape and preferably re-tempering. If you’re going to do all that, you might as well forge it out into a better, wider, curved tool.

Misc mild steel bars can be used, but will not hold an edge well. In a pinch, you can even use a square edge, instead of a more knife like beveled edge.

Planer blades of high speed steel make very nice scrapers. They are extremely hard, tough, rust resistant and hold an edge incredibly well. Another advantage is that since they are straight, some will have two usable edges. I use two tools or edges of varying sharpness during the processing of most hides into bark tanned or braintanned leather, so having two edges of different sharpness on one tool is great.

Tools made from planer blades. The top three are made from narrow blades and pretty short. The top two have handles made of wood covered with rubber or vinyl tubing. the third is antler handled and the fourth is a short blade tied into a slotted woo…

Tools made from planer blades. The top three are made from narrow blades and pretty short. The top two have handles made of wood covered with rubber or vinyl tubing. the third is antler handled and the fourth is a short blade tied into a slotted wooden handle, giving a longer working edge on a short blade.

The steel in planer blades is too hard to drill with normal tools, but can be ground easily enough with a 4 inch grinder, belt grinder or bench grinder. [EDIT: Melvin Beattie, one of my tanning teachers, Just wrote me the following: “Yes you can drill planner blades, files, etc.. Here are the drills that work, I have used them many times putting handles on planer blades. If I am using a hand drill start with a 1/8 “ then use 1/4” but you have a drill press just use the 1/4’’ and a good drill lube.” ] Handles for planer blades can be of two pieces of half round wood with rubber or vinyl tubing or epoxied wood (rough up and clean the metal surface before applying epoxy).

Planer blades can’t be drilled or sawn easily. To shorten, grind from both sides until thin, clamp in a vice, then break off.

Planer blades can’t be drilled or sawn easily. To shorten, grind from both sides until thin, clamp in a vice, then break off.

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Vinyl tubing with wood. Grind handle section down to 1” wide. Wood 1” wide. Vinyl tubing 1” available by the foot and many hardware stores. total length 4” to 4.5” Some will just pound tubing over the flat wide handle, but it’s very uncomfortable fo…

Vinyl tubing with wood. Grind handle section down to 1” wide. Wood 1” wide. Vinyl tubing 1” available by the foot and many hardware stores. total length 4” to 4.5” Some will just pound tubing over the flat wide handle, but it’s very uncomfortable for protracted use. The wood can be any easily split straight grained wood. There is no reason to use hardwood.

Antler handles are also very nice and may be the best option if the planer blade is only 12 to 14 inches long. You need at least 1.5” stuck into the antler, preferably more. Grind the end of the tool that will go into the handle to fit within the antler pith as shown in the photo below. Smooth and round off all sharp edges and grind the end into a slight wedge. Soak the antler overnight then boil for 15 or 20 minutes. Clamp the blade in a vice if you can and pound the antler handle onto it. Don’t drill the antler, just pound it onto the end of the blade. Allow the antler to dry completely before using it at all or you will loosen the union. Finding comfortable pieces of antler that are not too curved or too small can be a trick, but you can end up with very nice handles. Antlers vary in the amount of pith they have and general density and strength. If the antler is not too pithy, this method can also work for narrow tangs.

Antler handles set while wet and boiling hot at least 1.5” deep, deeper is better.

Antler handles set while wet and boiling hot at least 1.5” deep, deeper is better.

The width of the blade should roughly match the width of the honeycombed pith.

The width of the blade should roughly match the width of the honeycombed pith.

Grind the end of the bar to a slight wedge and round off all sharp edges.

Grind the end of the bar to a slight wedge and round off all sharp edges.

Grinding out tools: If you have a piece of stock that is already tempered, such as a chainsaw blade or car leaf spring, it is possible to grind and or file it to shape without changing the temper. If you overheat a hardened and tempered tool in grinding, it will become soft, a mistake commonly referred to as “burning” the steel. If you see colors appearing on the edge of the tool during grinding, you are flirting with danger. For something the hardness of a tanning tool, avoid letting the steel turn anything darker than bronze color, after that it will turn a purplish color, then light blue. Dark blue is pretty much dead soft, so stay well on the right side of that color. Using a high speed bench grinder, 4 inch angled grinder or belt grinder, it is very easy to overheat steel, especially when thinning the edge. Work in very short spurts, with frequent water cooling and watch for those colors with unfailing vigilance. For a tanning knife, one of two soft spots are not likely to cause you huge problems, but do your best to prevent them.

So, what is the ideal tanning knife for home users? I would definitely be a compromise in some way, but that would also be it’s strength. I have drafted up some plans and I hope to someday experiment with some prototypes. So many projects, so little energy :-/ for a fairly simple tool, I would say a good place to start would be a moderately curved, 3/16” thick, 1.5” to 1.75” wide, 11” working edge and 4-1/2 inch handles for a total of 20” long. Such a tool could be filed or ground out of a chainsaw bar, or forged from leaf spring or a large file. I would put a bevel on the back, to keep sharp for trimming skins during fleshing and other tasks. The bevel on the front concave edge should be at least 45 degrees, but thinner would be better, maybe something like 20 to 30 degrees?

As far as new knives go, there are a lot on the market. On the low end, the Wiebe 12” knife is as cheap as 20.00 before shipping from some dealers. According to Dakota Line Snares, a Wiebe dealer, “The steel on all three of the fleshing knives (8”, 12” and Elite) is 3CR13: Hardness Hrc52-55. The Elites are sharpened in the U.S.”. I think the Wiebe 12” flesher might be a very good budget option for new home tanners. Reviews on Amazon are good, but it’s hard to know what people are doing with them or how many of them are experienced enough to judge. In some pictures I’ve seen, it appears to be bent just in the middle in the classic dog leg formation common in cheap knives instead of forming a long gradual arc. In others it appears to be bent off center, or not much at all. I would not expect too much quality wise. They are produced in China with Chinese steel. A step up from that class of tool, there are the Wiebe elite, Neckers of various models, the caribou and Au Sable are in the 65.00 to 95.00 range and generally get good reviews. Many of them may be more flexible than would be ideal for a home tanner, so shop with caution. I have the Necker 600 and am not crazy about the handle design or the down sloped handle angle, but I actually haven’t used it yet. It is also more flexible than I’d prefer. The wider necker 700 looks interesting but it’s a little more costly at 95.00

Also in the mid range, there are affordable imitations of the European style knives that are sold in the U.S. According to one supplier they are stainless. The 12 inch version (which I would recommend over the 16 inch) is about 45.00 to 50.00 My guess is that the tangs will be the weak link in these English knife copies. There are also new real English Sheffield knives by J. Adams which have separately attached tangs that run all the way through the handles. They are expensive at about 145.00 for the 12” model. This is the high end of new tanning knives, outside of custom made tools. I would hunt ebay for an old european style knife before purchasing the new Sheffield knives. The problem with the antique ones is that they are usually on the long side for a home tanner. Exercise caution in shopping for new English knives as the American made copies are sometimes unscrupulously marketed as being from England or Sheffield.

Typical of old school quality, the two tools at the top have heavier, thicker tangs forge welded onto the blades, while the lower tool has a thin tang that is cut out of the same metal the body is made from. As a result, the thin, sharp edged tang h…

Typical of old school quality, the two tools at the top have heavier, thicker tangs forge welded onto the blades, while the lower tool has a thin tang that is cut out of the same metal the body is made from. As a result, the thin, sharp edged tang has split the handle. The sad thing is, it’s much easier with modern welding to weld separate tangs on.

The older tools have full thick tangs that go through the handle to the end where they are pounded over like a rivet, making for much stronger handles that put less stress on the wood. I don’t think this is one of them, but I suspect that the new pr…

The older tools have full thick tangs that go through the handle to the end where they are pounded over like a rivet, making for much stronger handles that put less stress on the wood. I don’t think this is one of them, but I suspect that the new production Sheffield, English knife copies sold in the U.S. probably have these these type of cheap flat tangs. I may try to modify this tool to make is shorter with thicker tangs and handles that come more nearly straight to the sides instead of arcing downward. I’m thinking some small metal parts and some JB Weld…

For me to buy and test all of these tools would be quite expensive obviously. I also don’t tan enough currently to put them to the kind of test needed to sort them out really well. None are what I would design from scratch, but again keep in mind that most of these are designed by and for fur trappers, whose only job typically is fleshing furs.

For used tanning knives, ebay is the best market, although they do show up on Etsy now and again. Obviously you can hunt old junk and antique stores, but you will be lucky to find one at all, let alone at a reasonable price in good condition. Avoid the cheapest and very common knives that are bent in the middle instead of in a continuous arc. These cheap tools usually have wire wraps on the handles, but some have solid ferrules. They are made of mild steel. They will work, but get something better if you can afford it. With the Wiebe 12” budget knife being tempered steel, there is hardly an excuse to buy a mild steel tool.

The common very cheap tools of mild steel like these should be avoided if you can afford something better.

The common very cheap tools of mild steel like these should be avoided if you can afford something better.

Quality vintage tools of both the old school thin wide cupped European type and the thicker narrow type tools come up on ebay, but they are often over priced. Patience is key. Look at ended auctions to see what has and hasn’t sold in the past and for how much, as well as what has been re-listed recently or lowered in price. There is a W.H. Horn and Brothers knife, just like mine, in nice condition for 85.00 plus shipping on ebay right now. Last week it was listed for 150.00

Finishing the Oak Bark Tanned Deer Leather

Cute and practical, just how I like 'em!

Cute and practical, just how I like 'em!

Last winter I started a project oak bark tanning a deer skin to make leather for the axe strop project.  The project follows the collecting and processing of materials to build pocket sized sharpening strops as prizes for people who completed the Axe Cordwood Challenge.  I'm making everything I need for the strops and decided to show the whole tanning process and everything else in a series of videos.  Almost 6 months ago, I laid the prepared skin away to tan in oak bark.  It sat in there about 4 months longer than it needed to, but I took it out and finished it this week, and it looks like it turned out pretty decent.

The leather is perhaps a little light and spongy, "Empty", as they say in the tanning trade.  Emptiness results from the loss of structural proteins in the skin by chemical or bacterial action.  It isn't much of a surprise considering that I over-limed it to start with, and that it sat in a weak vegetable tanning (plant based) solution for 4 months longer than it needed to.  Those are actually the type of things that a tanner might do on purpose to a hide in order to make the finished leather soft and pliable.  That's not what I was planning though.  I would prefer a rather firm and weighty leather for this project, but that is not even the nature of deer to start with.  Deer skin, at least our deer skin here in the Western U.S. has an open, coarse-fibered, low density character that lends itself well to softened leathers.  It would have been better to move it through the process faster with shorter liming time.  But, a process that uses somewhat preservative solutions like lime and tannin, begs for procrastination.  Add that I have to make videos of it all and it's a perfect storm for not getting things done in a timely manner.  It will probably work fine for the project, but I haven't assessed it closely yet.  If it doesn't work out, I have plenty of other skins I've tanned over the years that are suitable and I got to show the process start to finish, with some of the warts and mistakes that any home tanner is likely to experience.

The next steps will be making the wooden paddles, making glue and putting it all together into the finished product.  I only need a small amount of leather for the project.  Seven brave and industrious individuals chopped one cord or more of firewood for the cordwood challenge using axes only and will receive a finished strop and a leather patch when they are made.  The balance of the leather will be stowed away with the rest of my leather cache, to wait for a suitable project.

Axe Strops #6 Tanning the Deer Skin in Oak Bark

In this segment we finally begin tanning the skin.  Vegetable tanning is one of the neatest things I've ever learned.  This is the most exciting part where the hide fiber is transformed into leather.  Leather is not skin or tannic acid, it's a unique material made of the marriage of those two.  It can be left in the weather for years, and though it may become moldy and damaged it will not rot away for a very long time.  There are pieces in my compost piles that I pull out and throw back in every year just to see how long they will last.  The first piece of leather I tanned was a rotten piece of skin that I should have buried, but I had some oak bark sitting around so I made a solution and tossed it in.  The tan almost seemed to heal up rotten parts of the skin and knit them together.  I still have that piece of leather.  I left it hanging in a tree outside for a year or two once, but it appears pretty much unfazed.

Axe Strops #5, Rinsing, Drenching and Bark Preparation

In this segment we repeatedly rinse and scrape the skin to remove lime and unwanted gunk, then soak the skin in an acid drench made from fermented bran and water.  Oak bark is prepared by chopping and cooked to make the tanning solution.

Axe Strops Project #4, Unhairing the Deer Skin, (Cordwood Challenge)

Moving along with Part 4 of making axe strops from scratch for the cordwood challenge.  As some will remember, two of the hides for the project were stolen by a bear or bears.  The remaining hide is now ready to flesh and begin the deliming process.  In this video I finish scraping over the skin to remove as much hair as possible and then re-flesh it.  Next it is rinsed and scraped alternately to remove all of the lime and return the skin to it's normal flaccid state before tanning.  Also below is my original video on unhairing skins for tanning.

Pocket Axe Strop Production Part 1, Introduction, Liming Hides and Selecting Wood

This is part 1 of my project to build up Pocket axe strops from scratch as incentive/rewards for the Axe Cordwood Challenge.  I may also sell some on the website depending on numerous factors.  For those who don't know, a strop is a device for polishing or refining a sharpened edge.  it is the last step in many sharpening sequences and can also be used to touch up edges, especially if polishing compound is used.  It usually involves leather, which my design of course does, but the act of stropping can also be done on wood or even cloth.  In this project, I'm building strops from the ground up, which involves, tanning, glue making and working up some wood from it's raw log-like state.  There should be no materials used in these strops that were not processed by me here on the homestead, down to the lime and fat used in preparing the leather.  The project will span an undetermined number of videos, as well as a short version of making an easy high quality hide glue from scraps that most hunters or butchers of animals typically throw away.  Almost anyone who is not me should learn a lot from this series and I hope to learn some stuff too! ;)  Feel free to vote on names for the pocket strop or think of new ones... Stropet, Pocket Strop-It, Pixie Paddle (the woods are a dangerous place full of mischievious pixies!).

How I Process Deer Legs for Sinew, Skins, Bones, Hooves and Glue Stock

There are a lot of useful parts in the lower leg of deer and similar animals. I've processed many of them over the years while skinning deer for hunters.  When you're faced with a pile of 70 or 80 of the things you have to cut to the chase and giterdun.  Here are a few pointers for the would be leg dismantler.

What Type of Lime Should You Use for Tanning and Rawhide?

I remember many years ago trying to understand what type of lime I should use for tanning and being really confused.  This video and blog post are an attempt to foster a basic understanding of lime as well as which type to use and where to find it.

Lime is used in tanning to loosen the hair for removal, and sort of clean the skin fiber of unwanted substances.  It is used in the same way for processing rawhide as well as skin for making glue.  While there are other alternatives, lime was most commonly used in 18th and 19th century tanning processes and by home tanners since.  It is easy to use, accessible, safe, predictable and does he job well.

What we call lime exists in a cycle.  There are three stages in the cycle and once the cycle is completed, it could theoretically be started over again.  Only one of the stages is useful for tanning and in the majority of other arts.

The first phase is the one in which lime naturally occurs.  That is as calcium carbonate.  Calcium Carbonate is what shells and limestone are made from, the natural materials from which we make the lime that we use.  This form would include chalk, limestone, dolomite, marl, marble, shells and coral.  Calcium carbonate is fairly inert and stable.  Ground limestone or ground shells can be used as a soil amendment to raise ph and provide calcium, but not for tanning.

Shell, limestone and marble, three common forms of calcium carbonate.  Any of the stones may have any number of impurities, Magnesium being very common.  Shells are probably ideal for tanning use since they are very pure being almost all calcium carbonate.  They are also very easy to turn into lime.

If we heat calcium carbonate up red hot we end up with Calcium Oxide aka quicklime.  Qucklime is mostly an interim stage, though it has some uses in the arts and industries.  As relates to tanning, it is an interim stage.  If you read old tanning books that say to use quicklime, but that is because they acquired quicklime and slaked it immediately into the the next form for use.  Quicklime is easy to transport because it is very light, and it just made sense in the old days to order freshly burned quicklime and transport it that way. It would then be slaked immediately as it does not keep well.

Quicklime, also known as lime shells whether made of shells or rocks.  As far as tanning goes, quicklime is just an interim stage.  Voraciously thirsty, unstable and highly reactive, lime shells should be processed immediately.  When quicklime is mentioned in old tanning literature it is often stated something like "take fresh burned lime".  Easy to transport because of their light weight, lime shells were often delivered fresh and slaked immediately in the liming pits.

When we add water to quicklime, it produces Calcium hydroxide in one of two forms.  If we add a lot of water to the quicklime we end up with lime putty.  If we add only a little water, the quicklime disintegrates into a fine powder that can be stored dry.  

The dry powder, Dry lime hydrate is what you can easily buy for processing hides for tanning.  It is available at hardware stores as "type S lime" or "builders lime" and according to some of my viewer/readers as "barn lime" in some parts of the country sold for spreading on barn floors.  Just make sure that you are not getting dolomite or agricultural lime which is just ground up rocks.

Dry lime hydrate, the stuff you can get at the local building supply, is made using small amounts of water, which causes the burned quicklime to disintegrate into a fine powder.  This process doesn't always work on shells.  At least use hot water with shells, then it might work.  Really though, you should make lime putty at home.  It is more stable and more potent than the dry hydrated lime.

Lime putty can be made at home. It is more potent than dry hydrate and less apt to go bad since all you have to do to preserve it is keep it under a layer of water where it will keep indefinitely.  Either dry hydrate or lime putty can be used in tanning to equally good effect though, you just don't have to use quite as much lime putty.  For more on lime in general and burning lime at home, see the lime page.

To make lime putty, just use more water.  The solids will settle to the bottom of the storage container.

For more on what lime is actually used for, tanning and pre-processing hides, you can see this video on de-hairing.

Related Videos  

Oak Gall Leather Tanning Experiments and the horrible horrors of Case Hardening

I picked some fresh oak galls to extract juice from this spring.  When fresh and green in April, our large oak galls from the California Valley White Oaks are very juicy and exude a clear liquid when squeezed.  I put a piece of skin in the straight juice to test it and it case hardened, a phenomenon where the skin is shocked by the extreme astringency, becoming shrunken and stiff.  In case hardening, the outside surface of the skin is so tight and contracted that the tanning stops or proceeds slowly because new tannin can't penetrate to the interior of the skin.  In the video, I discuss the fact that fear of case hardening often leads to just the opposite problem, which is far more common, not using enough tannin.  The experiment also provides a few other talking points.

Making a Black Jack, Traditional English Leather Mug, From the Ground Up

The mostly finished mug's virgin voyage.

The video for this post is the visually interesting short version.  I think it turned out really neat and hopefully entertaining, while still giving a glimpse of possibilities.  But it is not intended to be instructional or detailed beyond offering crucial supportive visual information for this post.  This written version on the other hand will be fairly long and rather utilitarian.  It is far from exhaustive, but basically written for people out there who actually want to do this, but who hopefully have some experience with the things involved or can learn some of the necessary skills involved on their own.  So, watch the video first and if you are sufficiently intrigued, you can read more.

 

I am somewhat fascinated with the idea of leather cups and bottles.  There was a time when leather mugs, pitchers and bottles or flasks of various kinds were rather common in Europe.  There is not a whole lot known about how they were all made, but there are some clues and the mystery just makes it more enticing to me.

 

The black jack was something of an English icon, and the use of leather mugs persisted beyond what seems reasonable from a practical perspective.  I think so anyway, maybe not.  Now that I’ve made one, I can say it is rather pleasant to drink from and seems pretty durable.  It’s probably not going to shatter if some drunk drops it on the floor, slams it on the table too hard at the end of a draught or uses it to keep time with a drinking song, or all three!  Or what if there’s like some really buxom barmaid with her mammaries threatening to breach her corset carrying a huge tray stacked with a pyramid of Bombards and black jacks and some red nosed drunkard spanks her butt as she’s walking by causing the whole arrangement to be scattered asunder, filling her cleavage with delicious foamy beer?  Maybe I’ve seen too many movies, but I think that shit could’ve happened on a regular basis!  My friend also just pointed out that they are probably a pretty good travel mug, light and not too fragile.  BTW, the first person I showed it to promptly dropped it on the floor, no harm done.  I'm just glad it wasn't full of precious beer!

Old leather vessels:  Black jack with silver rim, bombards (pitchers) and a leather bottle from John Waterer'sbook Leather and Craftsmanship

 

I did what research I could and found a couple of useful things.  Wayne Robinson uses a frame for stretching, but I simplified that into two boards, which seems to work fine and is much simpler.  I’m glad I ran into his page on black jacks and got that basic concept, because I had no clue how I would stretch the leather on the form.  His quotes and notes were also very useful.

Then I found Rex Lingwood and his article on working boiled or cooked leather.  He is a very experienced leather artist who hardens and shapes leather by cooking it.  What he does with leather is impressive and not at all expected.  I watched his demonstration on youtube and that was really the key to my relative success with this project. I’d like to thank him for putting information out there for other people to take up and run with.  Thanks!  Here is Rex’s article on Cuir Bouilli, "boiled" leather, also very helpful.

Leather vessel by Rex Lingwood

 

We do know that black jacks were made of vegetable tanned leather, that is leather tanned with tannic acid from plant sources like oak bark and many others.  I also think they were baked or boiled to harden them.  They were definitely coated on the inside with some sort of natural waterproofing, most references seem to say it was pitch.

 

It is the actual process of manufacture that is least well known.  I think it is a safe assumption that basic shaping was done before the sewing.  I also feel pretty sure that all sewing was done before any hardening.  The outside was probably treated with linseed oil and soot, though it may be somewhat more complicated than that.

 

I decided to shape the wet leather on a form, shape the base separately, dry the parts completely on the forms, then sew it all up, re-wet the whole mug, cook it, re-dry it, seal it with pitch on the inside, and then paint the outside with layers of linseed oil mixed with lampblack.  What I didn’t know till toward the end was how I would keep it from deforming in the cooking phase, but we’ll get to that presently.

 


THE LEATHER

I used some bull leather that I had tanned a few years ago with oak bark.  I would not recommend using any commercial leather unless the company is absolutely clear that there are no chemicals or metal salts used in processing at all.  I’m not just talking about not using chemicals to tan the hide.  They may be used in other parts of the process too, I think particularly in dressing the skin with oils which may contain solvents for better penetration, such as neatsfoot oil compound.  I’m not sure what is available out there for truly natural, traditional leather, but it is certainly not much.


I used the neck section, which has a loose fiber and is probably not the best choice.  But, I didn’t want to risk the best leathers that I’ve tanned in this first run.  I had pounded the leather previously and was wondering if any of the black jack leathers were pounded either on forms, or before forming.  I didn’t know, but it seemed like a really good idea to use the pounded stuff.  Pounding leather while it is damp compresses it greatly.  It might end up half as thick and that means twice as dense.  Pounded leather is really cool and something I just started playing with recently after reading things like this quote from an old translation from french:

“This dressing is of great service to the hide, and there is a considerable difference between the goodness of a hide well beaten, and that which has not been beaten; shoemakers who value themselves on the goodness of their work, beat their soles strongly and for a considerable time.”  The Art of Tanning and of Currying and Leather Dressing 1773

Pounded leather with stone sleeker and ironwood mallet.  The bit on the lower left is the same as the upper piece, but unpounded. 

So I used the pounded section and pounded the base piece as well, though not as thoroughly due to time constraints.  More from me on pounding leather in the future, but the short version is that it is awesome.  Use a heavy and very smooth faced mallet with rounded edges to beat the skin when it is in a slightly damp state, or on and off as it dries.

 

My leather also varied in thickness.  Commercial leather is often split down to an even thickness.  That is harder for me to do here and I didn’t have time to get it together and shave it down which is a sizeable project in itself.  Parts of the rim turned out a bit thinner than the rest and it tends to deform a slightly, but it’s not a big deal, and especially not for this first run.

 


FORMS AND CLAMPS

I had some nice fine straight, close grained fir lying about the yard that I used to make all the forms.  It was so nice that I was compelled to make the two clamping pieces from it instead of using scraps of 2x4 which would have worked fine.  The fir turned well enough on my lathe after roughing out with a hatchet.  I needed three pieces.  One for the main body, one for the bottom and a third to use as a form to shape a metal ring.  The ring is used in conjunction with the bottom mold piece to stretch the leather into shape and hold it while it dries.

Raw material roughed out to put on the lathe.


The forms bottom and accompanying ring, and the main form before I cut it all up.

 

The metal work was a bit of a diversion.  I had to find a piece of metal and set up a forge.  Setting up the forge was possibly the easiest part of that.  I cut a piece of metal tubing that was a little small, turned a piece on the lathe to form it on, set up a forge, grabbed some charcoal from a charcoal trench that I hadn’t emptied from last spring, heated the metal tubing, hammered it wider till it would start to fit over the form, heated it up nice and evenly hot and pounded it over the form to shape it.  Just in case it might want to warp, I cooled it on the form by quenching it in water so it would shrink down to the shape of the wood.  It went very smoothly all in all and could have taken a lot longer.  Back when these vessels were common they didn't have scrap piles with pieces of welded tubing sitting about.  A smith would more likely start with a piece of iron nothing close to the needed shape, beat it out into something they could use, weld it into a ring in the forge and then do what I did.  Not a difficult job for any smith, but more time consuming.


The metal ring form, post mortem

The body was turned with a flared base.  I like that look a lot and might even consider making the flare more pronounced in the future, though now that it is finished, and shrunken slightly, the flare is more pronounced.  As soon as the pieces were turned I oiled them up with some old lard that was sitting about to help slow or stop any checking (cracking) of the wood as it dried, being especially generous applying it to the end grain.  It was splattering me with moisture on the lathe, so it really was quite wet.

 

The clamps were hewn out of the split fir slabs with a single beveled hewing hatchet, and briefly planed smooth on the faces that would be next to the leather.  Pretty smooth anyway.  Then they were notched to accommodate the flare at the base of the form.  The edge that would be pinching the leather was slightly rounded.  That is one place where a 2x4 may not be so great since the edges are probably usually too strongly rounded as they come from the mill.

The clamp boards and the main body form.  Note the notch cut out for the flared base.  Very simple, but not wanting for effectiveness with a couple of good clamps.

 

I soaked the leather in warm water till it was completely wet through.  some of the work of pounding was reversed in soaking because the skin swells in thickness with water, but I’m sure that work of pounding was not all lost.  After a warm water soak, the thoroughly wetted leather was stretched on the forms using the stretching clamp boards and some nails.  I had to pull the nails once and re-pound them differently to stretch it tighter.  I just used a couple of clamps to tighten it down   I wish I had pulled the nails and redone them one more time to stretch the leather even tighter around the body form, but it turned out fine.   A welt (an extra piece of leather) was sandwiched between the two outside handle layers to increase the handle thickness. 

 

That metal ring for the base was very hard to pound on over the thick leather.  I lubed it up with some olive oil though and it went on eventually with much pounding.  With everything pounded and clamped together, I cranked up the woodstove, hung the pieces to dry overnight right next to the hot stove, and went to bed!


STITCHING

In the morning I took it all apart and trimmed the pieces close to where I wanted them.  To insure the pieces wouldn’t shift on me during sewing, I ended up glueing on the base to hold it during sewing and I also glued the three handle flaps together for the same reason. I put in a couple of temporary stitches at the top and bottom to hold it all while I got the first seam finished.  I used hide glue, which is water soluble, but again, only temporary.  I think I made this hide glue from pieces of this same skin.  I ended up using that batch of glue a couple more times during this project.  More on hide glue here.

Hide Glue Pieces

 

I have actually done very little of this type of stitching, so I was worried I would be lame at it.  The first seam, had to be the one closest to the body. I have a stitch marking tool, which is a little wheel that marks dots on the leather so you can make even stitches.  They are great.  It seemed like the stitches it marked were a little far apart though, so I doubled them by marking stitches in between resulting in a hole about every 1/8 inch.  That didn’t go too well. With the large thread, awl and needle sizes I was using, it just turned out pretty rough looking no matter how careful I was.  The rest of the stitches are not all perfect, but I’m satisfied.  I still think this stitch wheel is a little wide for this project at 1/4 inch wide, and would guess that 3/16 inch spacing might be closer to ideal.  But it worked fine and the liquid proof nature of a black jack is not from tight stitches, it’s from the pitch coating.

The stitches up against body in the first seam were definitely too close at 1/8 inch.  The look sloppier and cut into the leather easily.  1/4 inch maybe a little bit long, but workable and they look much better.  The mug still have a brown look now, but it will eventually be dead black as the layers build up.

 

I got to make a new awl for this project.  I make awls to sell that are basically designed for sewing buckskin.  They are stubby though and a longer handle is better suited to this type of sewing.  Mostly, I had to get that first row of stitches very close to the body, so I knew I'd need a long skinny handle.  I turned the new, longer handle out of some native oak on my lathe and wrapped the tip with sinew to keep it from splitting.  Hide glue was used to paint the area before wrapping and several times after wrapping with time left to dry in between.  After alternate sanding and re-coating with glue several times I put on a final glaze of glue, it is clean looking and very tough.  As long as it stays dry it should perform admirably.  Most leather sewing awls for this sort of thing are shaped like a diamond I think or maybe a triangle.  Anyway, they are faceted so that they cut the leather as they go through rather than just stretch open a hole by parting the fibers like my round awl bits do.  I thought I would compromise and make it faceted at the tip, but basically the same long tapered shape.  I would say it worked pretty good, and honestly, as long you can get the job done with reasonable effort, the less cutting of fibers that happens in leather sewing the better.  So, whether the facets I ground into the tip did anything or not, the awl worked well.

New awl

Sinew wrapping.  Some may understandably doubt the ability of this wrapping to keep the wood from splitting, but after shooting blunt practice arrows wrapped like this into stumps, rocks and dirt over and over again, I have no doubts at all.

This stitch uses one long thread and two needles.  The needles are passed through the same hole, from opposite sides, first one then the other.  The stitch lines were marked carefully with dividers and a stitching wheel to offer the best opportunity for keeping the stitches even and straight.

 

Normally this type of stitching is done in a simple wooden vice.  I have long wanted to make such a vice, but I decided that the cup’s shape was probably too awkward for the vice to be of much use anyway.  Without a vice, the stitching was extra slow.  It took about 1 minute per stitch at the very best, but that is after I got into the swing of it and not including problems or set up time, so two minutes per stitch is probably closer.  At a rough count of 198 stitches, 2 minutes is about 6.5 hours, which seems about right, if not low.  The basic process was to cut the handle to shape with a sharp knife, use dividers to mark the stitch lines, and run the stitch-marking wheel down the line.  This sewing method uses two needles and one long piece of linen thread.  The thread passes from both sides through the same hole.  I often needed pliers to pull it through.  That’s good, I wanted tight stitches anyway.  Once both threads are through, they are both pulled tight.  To finish off, the threads are back tracked down the seam through several holes and then simply cut off flush.I was up sewing till 3:00 am on day two, but the cup was ready for the next stage in the morning.


COOKING, FORMING, DRYING

I spent a lot of time in the morning reviewing whatever information I could find and finally decided on a plan of attack.  Watching Rex Lingwoods video helped me understand what I might be dealing with when the leather shrank in cooking.  What I decided was to cut the form into several parts, in this case 7.  The center piece would be tapered for easy removal.  That meant I had to cut the base off of the original form and will have to turn a new one with the same size and flared base if I want to use any of the rest of the form in the future.  I was torn between cooking the leather with the form in place or cooking and then stretching it back into shape.  I decided to go with cooking in hot water and then putting the form back in.  I soaked the mug and heated some water to 85º to 90º degrees celsius (185º to 195º F).  I think I could have cooked it longer, but it seems to have turned out fine.  Once the leather shrank quite a bit, I put the form pieces back in and drove them home.  I was really thinking it probably wasn’t going to work, but it did.  Whew! 

 

I had to push the shrunken leather back up the form and in retrospect would have liked to have done that more.  I just rounded the edge of a hardwood stick to do that.  A clamp of some kind would have really helped.  So, there it was. The form was back inside, though slightly smaller than it had been because the many saw cuts I made took away a little bit of the wood.  That was okay with me.  having a smaller form accentuated the flare at the base and made it easier to put the pieces back in.  I had to dry it fast, so I left it right up close to the very hot woodstove with a fan blowing on it, turning it often.

The cup dried on the split form.  The deer tail is incidental.


PITCHING THE INSIDE

While the leather was drying I started messing with pitch formulas.  I thought the pitch should be slightly flexible.  After trying many different mixes of pine pitch, rosin, beeswax and raw linseed oil, I ended up with a beeswax/pine pitch mix.  Now it seems a little soft when it gets warm and I removed it to be replaced with a straight pitch coating.  There is a difference between pitch and rosin.  Rosin is hard at room temperature and is made by driving off the volatile components of pine pitch.  Pine pitch is more gooey and sticky.  Rosin can also happen naturally when pitch sits long enough that the turpentine evaporates naturally.  I had pitch in all stages from fresh to rosin, but favored the stuff that was closest to rosin.  I think a fairly hard coating is probably what is wanted.  Something that is not at all sticky unless heated up, and these vessels are not used for hot liquids.  Pitch loses the solvent portion when cooked in my experience, so just heating it and melting it enough to strain out bark, bugs and pine needles makes it more hard and brittle.  I thought that the brittleness would cause the pitch to crack and flake off.  The mug was a little flexible, but as soon as the pitch cooled inside it, it was quite stiff!  I was surprised that the pitch offered so much to the structure of the mug, and now think stiff pitch will probably not flex enough to crack under normal use.  In truth, I would think that they require some maintenance no matter what anyway.  Since pitch is thermo setting, it can probably just be melted back together if cracked badly.  Or it could just be cleaned out competely and re-coated.

 

I poured the molten boiled pitch with about 1/5 to 1/4 beeswax mixed in, sloshed it around and dumped it back out a few times.  As the molten pitch cooled a little, it allowed me to get a thicker layer.  I'm not sure what it ideal, that will be learned over time I guess.

 


PAINTING THE OUTSIDE

The lampblack for the outer painting was made with a simple oil lamp arrangement covered with a stone plate.  You can read more about lampblack in this blog post.  It’s cool stuff.  The lamp black was mixed with linseed oil to paint the outside of the mug.

Simple arrangement for making lampblack.  A simple oil lamp with a stone plate set over it.

Accumulated lampblack

Accumulated lampblack

 

There is something that you read about in old technical and formula books called Japaning.  I imagine that term evolve from westerners trying to emulate the fine art of Japanese lacquer ware.  So far as I can tell, it involves various process, most of which use linseed oil, resulting in a shiny enamel like finish.  It was used on tea trays, cars and apparently on black jacks.  It is hard to tell from pictures if all black jacks had that sort of gloss finish, but some certainly did.  Linseed is a drying oil, which means that it cures over time by reacting with oxygen to form a sort of plastic-like film.  Older recipes for this type of finish often call for Japan drier, which is a solution of toxic metals that speed the curing time of the oil, the same metals found in what is now sold as boiled linseed oil.  I’m not going to use toxic metals on a food item, or probably on anything else, but there is a question I have not yet answered regarding whether the metals and other treatments of the oil, like heating it for a period of time in the absence of oxygen, just make it cure faster, or make it cure more thoroughly in the long run.  I plan to test that eventually if possible.  In the meantime, pure raw linseed oil, even the cold pressed food grade stuff from the health food store cures to the touch in a few warm days and seems fine for the things I use it for.   I think I’m going to go as far as I can using just the raw linseed oil and lampblack for now.  For a little more on linseed and other drying oils, see my video on oiling tool handles.

 

The goal is to eventually have a thick somewhat glossy outer finish.  My basic process for painting the outside will probably be something like, paint on a thin layer, let it cure, then add another and so on.  Maybe I can polish the outside once I build up and cure enough layers.  The oil is best spread thin and allowed to cure.  If it is thin, oxygen can reach it and it will cure faster than a thick layer will.

 

I put on two thick layers right off to get the oil to soak in as much as possible and a couple more the next day.  I wanted to get the oil into the skin pretty far so that it would eventually stiffen inside the fiber structure and help harden the mug.  I think I got quite a bit in there.  The layers of oil applied will soak in for a while, then at some point one of the coatings will not soak in all the way because the surface has been saturated and sealed.  This is the point at which you can start building up thin layers on the actual surface.  At least that’s how it works with wood.  This is new territory so we'll see.

Freshly coated

 

I put the mug near the open oven on low heat to drive the oil that was sitting on the surface into the leather.  That melted the pitch coating most of which ran out, especially on the hot side, which was basically left with no coating at all.  When I filled it, the mug leaked slightly where the pitch had drained away at the bottom seam.  Otherwise it seemed to work fine and it was actually quite nice to drink out of.  Boy that Racer 5 IPA tasted good after three days of frantic problem solving and work!  There was no off taste as I suspected there might be.  I don’t think I’d mind a little pine flavor in my beer anyway Pine is a common flavor component found in hops.  Actually, I may not have detected it since I was drinking IPA.  I missed the midnight deadline to enter the instructables leathercraft contest by 15 minutes waiting for my hastily patched together youtube video to finish uploading.  It’s probably just as well, because it is pretty rough with missing footage, typos and clips out of order.  The new video posted here is much better put together and contains footage missing from the first one.

Ye olde black jack bottom


THOUGHTS AND WHAT TO DO DIFFERENT NEXT TIME

I would like to eventually make a second black jack.  I could do it much faster a second time, especially on the same forms.  I would probably push the boiling further, and use leather that is pared down to an even thickness.  I might also try boiling it with the form in it as a sort of second boiling to set the shape better and harden the leather more.  Actually, I did try that, but I was having technical issues with my water heating apparatus and had to give up on it.  The other option would be to bake it on the forms.  This intrigues me as well and I’m curious enough to want to try it.


Other things I might try or do different.  I would experiment before hand with stitch length, but would guess that 3/16 is going to be about right.  Straight pitch as the coating, with no beeswax or oil.  cutting the handle closer to the stitches after the mug is sewn up (I just think they could be closer, but sewing them that close to the edge might be awkward).  I would make the rim too tall.  You can see in the pictures how it shrunk down making the rim taper down away from the handle.  It may be possible to push it back up enough to get it level, but not without a something to firmly hold it while it is being worked on.  If there were extra leather on the rim it could even be nailed in place to shrink and dry and then trimmed to the desired shape.  A wooden vice to hold the piece while working would be very nice, even if it only worked for some parts.  maybe a special vice to accommodate the fat cup body.  Proper leather stitching needles.  I ordered John James Saddlers stitching needles size 2 on recommendation of Youtube user Ian Atkinson I also just need to bone up on general leather working and stitching skills.  I'm still much more of a tanner than a leather worker, so I may also pick up these two books 1 2 that he recommends and work on those skills.  Lastly, I'm not sure about the outer finish and would like to do some more research and experimentation around "Japaning" with linseed oil to get that high gloss finish.


Another project I'd really like to tackle is a leather bottle of the short keg-like variety as in this picture.  They are so damn cute!  I have ideas on how to make those, but again, we don’t actually know how they were manufactured.  This experience was fun and just the kind of adventurous multi-disciplinary project that I like doing.  Trying to resurrect old technologies from available clues gets me all hot and bothered.  It was extremely time consuming though and ate up most of 3 days.  I think I can figure out the leather bottle thing and will certainly post that as well.  I’m also currently working on recovering the apparently lost art of making genuine old school apple butter, which is very exciting.  I have already compiled hours of research that I’ll be publishing, which probably constitutes, much if not most of the best available references relating to that subject.  I’m also amped up to make a throwing tomahawk out of wrought iron and steel forged and welded in the ground forge that I just built for this black jack project.

Must replicate adorable antique leather bottle!

 

Each of these projects takes many hours, or sometimes days, let alone the time required to write it all up, and to plan, shoot and edit video footage.  In order to keep doing all this and building an archive of information here, without having annoying advertising on the website or on my youtube videos, I need to have at least a small income.  If you appreciate this type of information, you can help me keep it up by using my amazon links.  Thanks so much to the people that are already using them, you guys rock!  If you bookmark this link in your web browser toolbar and use it whenever you shop at Amazon, I get a small advertising fee at no cost to you, regardless of what you purchase.  It is usually not much, but if a lot of people do it, it adds up.  I appreciate your support.  If you make a black jack, or have already made one, please let me know!

CHEERS!

Skinning Deer and Goats for Perfect Hides and Carcasses

I slaughtered a goat a couple of days ago for meat and used the opportunity to make this video on proper skinning.  I've skinned hundreds of animals to develop this simple strategy, which works well for me.  It could be streamlined by anyone with enough practice and experience, but I think the approach is pretty solid.  Yes, some of you aren't as big or strong as I am and may think this method is not possible for you.  It may take quite a bit longer and you may have to do a little more cutting, but don't give up too easy!  You may have to use the knife a little more, but use it only where you really actually have to and do your best to muscle and technique your way through the rest of it.  Get all up in that carcass and use your bodyweight, and you may be surprised at what you can do!  No need to be a purist.  If you have to use a knife, then so be it, but it seriously takes FOREVER to skin an animal carefully with a knife and you will still slip up and cut the skin sometimes. Countless hides are ruined every day due to poor skinning which is by far and away the norm, even when people are well intentioned.  Share this video with those hunters and animal raisers you know to help change that!  Hides are a valuable resource and tanning is an accessible skill for homesteaders and small farmers.  I'm still working on that tanning book, which is going to make it more accessible than it has every been, but this goat was a bit of a distraction among others.  It's almost processed and put away now, just have to render the fat and salt the skin (which may also be videos) and wrap some stuff for the freezer, then I won't have to worry about meat... at least until buck season opens in a couple of weeks.

This approach is somewhat applicable to lambs and sheep as well, and some parts to skinning almost any animal.

https://www.youtube.com/watch?v=J-oWBdxxMfA