Both EOS and Stratasys, a company based in Minneapolis which makes 3D printers that employ plastic-deposition technology, use their own machines to print parts that are, in turn, used to build moreprinters.
TechShop's overseers have, quite cannily, begun to offer up a portion of the warehouse's 17, 000 square feet as office space, giving its members a shot at some prime San Francisco real estate, a flight of stairs up from an impressive array of machine tools -- laser cutters, water jets and more 3D printers than most mortals have seen in one place.