About this 3D model

This is a direct extruder for bowden and 1.75 mm filament (NEMA 17 stepper motor) Idea based on this extruder: http://www.thingiverse.com/thing:275593 Bill of materials: - **Bowden tube**: ID = 2mm; OD = 4mm (e.g: http://reprapworld.com/?products_details&products_id=167&cPath=1616_1653) - **Pneufit** for 4 mm tube (e.g: http://reprapworld.com/?products_details&products_id=169&cPath=1616_1653) - **Drive gear** (e.g: http://www.ebay.es/itm/151122877988?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649) - **623ZZ Bearing** - **"Strong" spring** (about 20 mm long; is not strictly necessary, you can make pressure with the screw, without spring) - **NEMA 17 stepper motor** - **M3 screws** (different lengths) - 1 **M3 nut** _______________________________________________ Follow us on: http://www.shuttl3d.com http://lab.shuttl3d.com http://store.shuttl3d.com