3d printer technology fff fused filament fabrication connections usb 20 card reader printing speed 300 mms bottom layer speed 8 mms filament diameter 285 mm printing area 230 x 225 x 205 layer thickness 002 layer resolution 200 20 micron nozzle diameter 04 mm supported operating systems windows 8 windows 7 windows vista windows xp mac os x power consumption in use 221 watt display type lcd display card reader sd special feature heated pri