Summary

Makerbot style extruder for the MakerFarm Prusa i3 with auto bed leveling probe

Instructions

Easy to print. Had to ream the bushing holes to fit. I am using a very small servo which is hot melt glued in place. Also had to add a blob of hot melt glue to the back plate so the homing switch closed before the extruder ran into the switch housing.
The filament clamp & front are based on the Makerbot. The arm was downloaded from MakerBot and the spring/bearing/screws were also from MakerBot. See "Spring-loaded Replicator 2 Drive Block".
zip file contains stl files of the front and back plates/mounts and the switch arm. Also included are 3D pdf of the parts and assembly and IGES models of the 3 parts.

Extruder # 6