Page:Sheet Metal Drafting.djvu/118

104 elevation. The miter lines BG and CH should be drawn in. The solid and dotted lines representing the other edges of the pipe are located by extension lines running from points 2, 4, 6, and 8 of

Fig. 143. The patterns are drawn in the manner described in Problem 25.

Locks are purposely left off of the patterns in order to avoid