Abstract: A metallic disk (10) for use with a powered hand tool to remove measured small amounts of material from the surface of a workpiece to smooth the surface thereof. Each disk (10) being formed with an array of strategically placed abrader elements (14) in which each such abrader element (14) is formed with a series of projections (38) in the nature of teeth extending inwardly from an inner wall, defining an opening, toward the edge of the abrader element (14), and being raised above the surface of the disk to engage the surface of the workpiece.

Abstract: A multi-tasking disk which in one form is used primarily with a powered hand tool to remove measured amounts of material from the surface of a work piece, and, in another form, serving as a buffing tool for removing minute amounts of skin from feet, elbows and the like on a human, or removal of like minute amounts from vegetables. Each disk is formed with an array of either abrading or buffing elements in which each element involves a series of projections having sharpened edges raised above the surface of the disk to accomplish removal of material from the surface upon which it is engaged.

Abstract: A method is shown for manufacturing a bone saw blades from a metal blanks by using an electric discharge machining process. Plural stacks of metal blanks are formed and loaded into a jig where the stacks are secured in an angular position. The stacks of metal blanks are subjected to an electric discharge machining process whereby teeth are machined into the peripheral edges of the metal blanks. The positions of the stacks are switched and the electric discharge machining process is repeated.