Industrial 3D printing quietly booming

While we’ve heard of personal 3d printers for hobbists, what’s become a quiet boom, is the use of the same technologies for industrial parts printing called ‘additive manufacturing’. Companies like Audi, Siemens, and GE have begun to use 3D printing for a portion of their aerospace parts and automobile parts! http://www.engadget.com/2014/05/07/additive-manufacturing-3d-printing/