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64
SHEET METAL DRAFTING
is also true of points E and G, and D and F, while point E is in the center. The student should try and see if he can learn the
Figs. 91–94.—Use of the Backset Method.
method of doing this, thereby saving time by doing away with the extension lines drawn from the half circle. The laps necessary for riveting the pieces together are shown in Fig. 94.
