National Geographic : 1943 Feb
4 Case of LESS SCRAP MORE FIGHT THIS sleek and polished example of superfine machining is a pro peller shaft for a Buick-built Pratt & Whitney aircraft engine. It used to be cut by slow and pain ful whittling from a forging made from a 184-pound bar of steel. By changing the forging method, Buick found a way to get the same results from a steel bar weighing only 165 pounds. Nineteen pounds less material to be cut away, 19 pounds less scrap to be sent back for remelting, considerably less ex penditure of precious machine tools and -111 propeller shafts from the same materialthat used to deliver only 100 - in less time per shaft! The country needs scrap metal-all you can dig up. It also needs to avoid waste of ma terials in the making of fighting tools. So we'll strike a bargain with you. Do your share in "getting in the scrap"- and we'll do ours, in this and other instances like it, to get the utmost "fight" out of the mate rials we work with.