Saw blade

A saw blade comprising a foundation of spring steel, said foundation including an edge portion with a series of teeth formed therein at intervals therealong for cutting in the plane of the blade foundation, each of said teeth separated from its adjacent teeth by chip spaces with a seat formed on one edge of each tooth for supporting a cutting material plate and a tooth back formed on its other edge, said seats being formed at rake angles (.alpha.) varying from tooth-to-tooth, a cutting material plate mounted to the seat of each tooth, each of said cutting material plates including a cutting edge oriented generally transverse to the plane of the blade foundation and at a location to effect a cutting action in the plane of the blade foundation and a front surface formed at substantially equal rake angles (.beta.), with each cutting material plate mounted to the seat of a tooth to orient each tooth front surface at an effective rake angle (.gamma.) different from the effective rake angle (.gamma.) of the front surfaces of others of said cutting material plates, and said teeth being variably spaced along the edge portion of said foundation so that the pitch distance (t) between the cutting edges of some adjacent ones of said cutting material plates is different in comparison to the pitch distance (t) of other adjacent ones of said cutting material plates.