About this 3D model

THIS DESIGN IS UNLIKELY TO WORK WITHOUT GEARBOX! Use a very powerful steppermotor, gearbox or just switch over to 1.75mm filament. Use this planetary gearbox for example: http://www.thingiverse.com/thing:8460 This is an custom version of the Airtripper Extruder to use with 3mm filament. A M6 Nut will fit perfectly. for more 3D printer crazyness: http://www.femoral.de (German)