A pint-sized gun that shoots a spray of molten metal is saving U.S. wartime industry hundreds of thousands of dollars and hours of labor. The Army & Navy have 750 of these hot-metal guns in use this week. Aircraft makers are using thousands. The new tool is indispensable in 1) the manufacture of airplanes; 2) their maintenance by the Army & Navy; 3) the repair of ailing machinery which, owing to the dearth of metals and machining facilities, would be scrapped or stand idle.
The spray gun is a fist-fitting gadget which trails three rubber...
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