World Maker Faire New York 2013
These are RepRap 3D printers that melt plastic filament and build solid physical objects. The coolest thing that a RepRap can print is another RepRap. Most of these 3D printers' parts are printed plastic parts!
About the Maker
Software engineer, RepRap/3D-printing hobbyist, best-selling author ("Hacking TiVo: The Expansion, Enhancement and Development Starter Kit"), movie star ("BBS: The Documentary"), husband and dad.