| Sumario: | The article discusses three-dimensional (3-D) printing, also known as additive manufacturing. It comments on companies involved in this industry, including 3D Systems, which operates a plant in Rock Hill, South Carolina, and Shapeways, which operates plants in Long Island City, New York, and the Netherlands. The author considers biomedical applications and the use of 3-D printing to create tissue, skin, bones, and organs. The commercial advantages of on-demand printing of customized products are explored and concerns about counterfeiting and security are addressed.
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