Forging a Deck Socket Wrench

How to forge a deck-socket wrench; read blueprint, select stock, forge and finish. Diagrams. (MN 2350-b; 21 minutes) Blanking and Piercing U.S. Bureau of Mines in cooperation withAluminum Co. of America, 1944. (How to Form Aluminum Series) Blanking, piercing, and perforating techniques in scenes and animated drawings; Guerin or rubber-pad method; and the use and care of the tools and materials employed