Schwarkzkopf, Ernst · New York : J. Wiley & Sons ; London : Chapman and Hall · leaf 180
TOOL MAKING 163 the drift pin is allowed to remain in the eye, as in Fig. 117(e), while the sides are being flattened down. To remove the pin, place the work over the tool hole in the anvil, and drive the pin through. Draw the punch to the dimen- … sions given in Fig. 117(a), square first, then octagonal, and finally round. Cut off the extra stock and grind the punch straight at the end. Make allowance for the head and cut off the tool from the bar, using a sharp, hot chisel. Draw the corners tapered DRIFT PIN ol xd Gl A toward the ends, form…
Forging
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
