Page:Sheet Metal Drafting.djvu/177

Rh c, d, e, and f of Fig. 231 over into the stretchout. Points of intersection can be determined by starting from the half-profile, tracing the extension line to the miter line, and thence to a correspond-

ingly numbered line in the stretchout. A curved line drawn through these intersections will give the miter cut of the pattern. A ¼-inch lap should be added to one side of the pattern.