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July/August 2007 Published by the IEEE Computer Society 0272-1716/07/$25.00 © 2007 IEEE Clean, Green 3D Printing Z Corporation—the only maker of multicolor 3D printers—announced the release of zp140, a highperformance composite material that reportedly introduces the world’s easiest, safest, and greenest postprocessing option for finishing monochrome 3D printed models. Using a quick mist with tap water as a cure, monochrome parts made with zp140 now require no further treatment or equipment to reach their finished strength. This is more environmentally friendly than other approaches that use caustic baths or razor knives to set and finish monochrome parts. In addition to water-curing capabilities, the material provides brighter whites (180 percent whiter than before), faster production, and lower cost per finished part. According to the manufacturer, it hardens in less than half the time of previous materials. For more information visit http://www.zcorp.com.