Don't Freak Out, but the First 3D-Printed Metal Gun Totally Works When a design for The Liberator, the open-sourced and 3D-printed gun, was released last year, worriers could take some solace: The gun wasn't entirely composed of 3D-printed materials. The gun's firing pin—the thing, essentially, that put the fire in the firearm—was made of metal. And metal is extremely difficult to use as a material for 3D printing. A company called Solid Concepts, which ...
Nov. 7, 2013 - The Atlantic via Yahoo! Finance