3D printing technology (or additive manufacturing) promises fascinating opportunities for new industries: creating human tissue for organ transplant; at-home production of toys, clothing and replacement parts; and space station production of tools and parts using designs transmitted from Earth. It has also enabled very small businesses to manufacture affordable products one-at-a-time. Companies like Shapeways provide the printing capabilities and facilitate the marketplace, allowing professional artists and designers, as well as hobbyists, to build businesses on a shoestring. This is a fascinating series of articles:
http://www.businessweek.com/technology/special-reports/ceo-guide-to-3d-printing.html
