Okay, this is a simple technique for wood up to around 2 inches in diameter. It is very effective and reasonably efficient, especially when you consider maintenance and cost of a chainsaw. Cutting up small wood with a chainsaw can be dicey too, especially if it's crooked. It can fly all over and cause the saw to snag and kick back. This technique is probably faster than using most, if not all, hand held manual saws and it is certainly a lot funner.