Abstract: The present novel inventive method of grinding the raking surfaces of a blade of a circular saw includes the steps of positioning a rotating frustoconical grinding element in two-directional movable relationship to a fixed plane of reference such as a work bench; positioning the major plane of the circular saw in a position which will permit a tangential approach of the frustoconical grinding element to the raking surfaces of the blade; moving the grinding element into abutment with the raking surface of one tooth of the circular saw; pressing the outer surface of said rotating grinding element against said raking surface; utilizing manual pressure in order to obtain a concave surface having a progression of change of radius in which the tangent angle of said change of radius is between two and ten degrees and abrading said raking surface so as to form a concave configuration therein having a graduated depth terminating at a maximum of 1/32 of an inch measured in relation to lateral, radially directed leading

Abstract: The present invention relates to an improvement in the configuration of concave saw teeth of a circular saw. More particularly, the present invention comprises an inverse, half-conical, varying radius raking surface for a concave saw tooth of a circular saw.