Markus Kayser Builds a Solar-Powered 3D Printer that Prints Glass from Sand and a Sun-Powered Cutter Posted on June 26, 2011 by Dre Leave a comment Do It Yourself, Technology, Energy & Science http://thisiscolossal.com/2011/06/markus-kayser-builds-a-solar-powered-3d-printer-that-prints-glass-from-sand-and-a-sun-powered-laser-cutter/