Compton, Alfred G. (Alfred George), 1835-1913 · New York : J. Wiley & Sons · leaf 40
or changes of size which the pieces undergo in draw- ing, and in other operations to be described here- after. Estimate the quantity of iron needed for the hook, Pig. 20, making allowance for the length gained in drawing, and cut off a suitable piece. Then proceed as follows : First draw Exercise… … Fig. 20. Lastly, form the eye as in 5 and 6, being care- ful to have it in the same plane as the hook, and circular, and symmetrical on the stem. In all these exercises care must be taken to keep the iron hot enough to work easily, but without burn- ing it. A bright white heat is needed for draw-…
Metal-work
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