Extruder for a cheap chinese I3 Clone

thingiverse

This is my Extruder Design for the Affordable Chinese Clone I Purchased from eBay. One of the things I disliked about it was the Extruder, where the counterbearing was fixed, so you couldn't adjust the pressure from the bearing to the transportation gear which often caused hopping/skipping on the filament. Since there wasn't enough space for the Extruder Designs I found here on Thingiverse or I hadn't had a suitable spring lying around, I simply designed this extruder myself. It uses the bearing from the stock extruder, 3x M3 x 10mm countersunk screws for the extruder arm, 2x M3 x 16mm cylinder head screws for mounting the extruder on the stepper motor, one long (20mm or longer) M3 screw and a nut for adjusting the pressure of the bearing against the filament and a few M3 washers. The new design also has the possibility to mount a printing fan to cool your printed parts, which doesn't work perfectly but I had a 60mm fan lying around so that's why I designed it.