Mini Extruder with 3 Gears

thingiverse

The 3Gears extruder is my first design, smaller than traditional models with one motor gear and one driver gear. I plan to fit 2-3 extruders on a Printrbot Plus, so a compact design is needed. I'll DIY (design and create it myself). It features 683ZZ bearings (x2), 608ZZ bearings (x3), an M8 hobbled screw, and assorted M3 screws. An update on 2014/1/27 improved the internal space for better hobbled screw performance. Another update on 2014/1/22 added a base for J-head and PC04-01 compatibility. A user reported using 63ZZ bearings instead, so a middle gear was designed to accommodate this alternative.