Test gear, comes from https://github.com/Buback/Prism-Reprap/blob/master/z-driven-pulley_2up.stl so probably GPL (you have to make your changes ava...

Part of Ultimaker extruder update by ghagen01 http://www.thingiverse.com/thing:15897 Have it made in steel. You also need the pin (model 530335)....

Part of Ultimaker extruder update by ghagen01 http://www.thingiverse.com/thing:15897 Have it made in steel. You also need the wheeled shaft (mode...