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Forget 3D printing—3D subtraction is going to arrive in your garage first | Wyly Wade
CNC routing is basically the inverse of 3D printing. Instead of using a computer to control a basic armature and print head that deposits plastic or some other material in three dimensions, CNC routing uses a spinning drill bit to carve wood, metal or plastic. It's the difference between making a sculpture out of clay and carving it from marble, only there's a robot doing it instead of a human. Forget 3D printing—3D subtraction is going to arrive in your garage first – Quartz. Related articles How robots are eating the last of America's - and the world's - traditional manufacturing jobs Social 3D Printing in Minecraft