Fig. 90.—Steps in Making the Cold Cutter.
Fig. 91.—Cold Cutter.
Punch and drift an eye 2 inches from the end a, [Fig. 90]. Draw this end tapering on the sides parallel with the eye, forming convex surfaces and terminating in 1 × 3⁄16 inch. (See sketches [b] and [c].) Cut the tool off at c, 11⁄4 inches from the eye, and form the head.
Grind the cutting end equally from both sides to form an angle of 60 degrees, and a convex cutting edge similar to that shown at d. Harden, and temper to a dark purple or light blue. The finished tool is shown in [Fig. 91].
Fig. 92.—Square-edged Set Hammer.
105. Square-edged Set.—[Fig. 92]. Punching and forging. Material: 31⁄2 inches of 1-inch square tool steel. Heavier or lighter stock may be used if desired.
Punch and drift an eye 11⁄4 inches from the end, then, using a pair of 3⁄8-inch fullers, form depressions about 1⁄8 inch deep across the corners, as at a,[ Fig. 92]. Cut the tool off 11⁄2 inches from the eye, and form the head to 3⁄4 inch at the end. Heat and anneal in warm ashes; when it is cold, grind the face smooth, straight, and at right angles to the stock.