Army researchers use 3D printers for rapid prototypes
ABERDEEN PROVING GROUND, Md. -- When you walk into this research lab you hear the overpowering hum of massive machines with robotic parts swinging past viewing windows as technicians spray objects with lasers attached to limber metallic arms.
Fifty years ago what goes on in this lab would have been considered science fiction, but what these Army researchers do is scientific fact.
These artisan engineers create three-dimensional objects out of plastic and metal in printers that seem more like Star Trek replicators.
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