Researchers at MIT and Binghamton University have discovered that slow print speed is an equal opportunity offender - it doesn't discriminate between professional and desktop FDM 3D printers. A team led by Professor John Hart of MIT's Department of Mechanical Engineering and Laboratory for Manufacturing and Productivity discovered that when printing at a 0.2 mm thickness, both desktop and professional FDM 3D printers tended to build at a rate of about 10 to 20 cubic centimeters per hour. One of the main reasons, they found, has to do with the feed mechanism, namely a pinch wheel that feeds the filament into the extruder. Read more at 3DPrint.com: http://.3dprint.com/170209/mit-binghamton-3d-printer-speed/