Paul Bunyan, the legendary ultimate lumberman, used an ax, as did every lumberman until after World War II. The chainsaw was invented in 1959, and it changed the face of forestry forever. Lumbermen were able to cut down more trees. Chainsaws evolved so they can be used more for various tasks, not just for cutting down trees. Thanks to the differences in chains, the chainsaw is a versatile tool. A chainsaw be used for cutting down trees, removing limbs, milling or cutting tree lengths into lumber or even to make sculptures out of logs.
A standard chain has a set of closely set teeth. It has the most teeth of all of the chains. This chain works well when you wish to cuts lengths of wood into smoothly-surfaced lumber. The sawdust produced when you use this chain is very fine. This chainsaw chain works best at a slower speed. This chain is a good for finer cutting, such as sculpting.
Half of the teeth on the semi-skip chain are close together, and the other half are spaced more widely apart. This type of chain works well when cutting hardwood, for it does so smoothly. This chain woks well for milling lumber, but because it has fewer teeth, the lumber produced when milling has a rougher surface than wood milled with a standard chain. It is good for sculpting, though not for the detail work produced by the standard chain.
The full-skip chain has teeth that are the most widely spaced, as if there were gaps between all of the teeth on the chain. This chain is the easiest to sharpen, and it works best on large chainsaws. You can mill wood at a fast speed with a full-skip chain, and the sawdust it produces is large and rough. The surface of the lumber produced by this chain has the roughest surface. It is good for removing limbs and for rough cuts, such as those for felling trees.