Saw
an instrument with a serrated but it occurs on the Egyptian monuments. Saws of the bronze age have been found in Germany and Denmark; and in the stone age rude saws of flint Greeks claim the invention of the saw, ing a groove known as a kerf. The or cut away wood or other material, makbut it occurs on the Egyptian monu- SAW-BILL saws of notched shells, and the Tahitians of sharks' teeth.
Modern saws vary in size and form, but may be divided into handsaws and machine saws, of which the first are the more numerous. Of hand saws the most commonly used are the gang saw, the crosscut saw, the frame saw, the hand saw, the panel saw, the keyhole saw, the bow saw, the ripping saw, the sash saw, the tenon saw, etc. Machine saws are divided into circular, reciprocating, and band saws. The circular saw is a disk of steel with teeth on its periphery; it SAXE pressed into molds or dies. The sawdust of mahogany and rosewood is used in dressing furs, and the small fragments of some woods, such as the pencil cedar, made by saw cuts or the turning tool, yield perfumes. Sawdust sinks in water though the wood from which it is cut floats.