Abstract: A saw having a fence assembly (FIG. 4) which is adjustable in position to set cutting thickness with a means of securing said fence assembly to a base (10). The fence assembly consists of a lower fence (20), an upper fence (30), an upper outer fence (38), and a lower outer fence (44) that, together with the base, brackets, and fasteners, restrains a work piece except for motion in-line with the cutting direction. A reciprocating blade (60) that passes through a hole in base (10) is held in a blade support assembly (FIG. 5) that provides a means to tension the blade and holding the blade at proper alignment. Bearings and supports hold the blade assembly in-place relative to the base except for reciprocating motion. A source of reciprocating motion is connected to the blade support assembly. An adjustable brace (84) is set a height just above the work piece, thereby restraining the cut pieces from upward motion.