The conveyor belt 3D printer idea seems to be catching on lately. Printrbot and Polar3D have teamed up to develop a new 3D printer called the Printrbelt, and although it's compact, its build size is extensive.The Printrbelt features a conveyor belt as a build platform, enabling a build area of 6" x 6" by "Infinite Z," as Printrbot calls it. The 3D printer's dimensions are small, at 16" x 24" x 16" and only 19 lbs, but the conveyor belt allows for the printing of objects of any length - and any number. Once a part has finished printing, it simply drops off the end of the belt, making room for the next object, so that the user can print continuously. Learn more at 3DPrint.com: http://3dprint.com/179736/printrbot-polar3d-printrbelt/