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WIRED CYLINDERS
39
points corresponding to points 1 and 5 of the profile. These points are to be used as centers from which to draw the intersecting arcs.
The line of stretchout, Fig. 55, can now be drawn and the entire
stretchout developed. A standard tin lock is added to each side of the stretchout. Why does the stretchout start with point 1? Why do the holes for the bail occur on lines 5 and 13? A ⅛-inch single edge is added to the bottom of the stretchout. The pattern for the bottom, Fig. 57, may be drawn by reproducing the profile