Compton, Alfred G. (Alfred George), 1835-1913 · New York : J. Wiley & Sons · leaf 114
n the rest of the tool after the edge is cooled. The making and tempering of a cold-chisel will afford a good illustration of this very useful method. Take a bar of f'^ octagon tool steel. Cut off a piece 1'^ long by nicking it all round on the Exercise 35. Pardee at a red heat, cooling it quickly… … ^iG- 56. it with the hammer inclined at a little larger angle. Both the opposite faces
Metal-work
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