Fig. 81.—Changing the Form of c, Fig. 80, to that of a, Fig. 82.
Fig. 82.—Diamond Point Tool, Finished.
By using a sharp, hot cutter and cutting entirely from the right inside surface (a, [Fig. 82]), and by holding the point over the edge of the anvil, so that the operation will have a shearing effect, the excess metal which extends more than 3⁄8 inch above the upper line of the stock may be removed. For a right-hand tool the point should be set 1⁄8 inch to the left, as shown at b, the two outside surfaces being ground smooth and forming an acute angle; the inside portion of the end on the side indicated by a should be ground somewhat shorter, producing a diamond-shaped appearance. Harden and temper to a very pale yellow.
Reverse the operations of cutting, setting, and grinding for a left-hand tool.
100. Right Side Tool.—[Fig. 83]. Forging, offsetting, hardening, and tempering. Material: 7 inches of 1⁄2 × 1-inch tool steel.
Fig. 83.—First Steps in Making the Side Tool.
Fig. 84.—Side Tool.