Page:Sheet Metal Drafting.djvu/151

Rh of the pan to lie flat against the ends and prevents thereby a "bunch" at each corner.

A wire edge of ⅜ in. should be added to each top edge as shown in Fig. 186.

First Operation.—The outline of the bottom of the pan is swaged on all sides by means of the "Square Pan Swage." The diagonals (line b. T. of Fig. 187) are next swaged in the same machine.

Second Operation.—The sides are "brought up" simultaneously