Printrbot Smalls Lower Z Motor

thingiverse

I designed this setup initially to accommodate a standard Z coupler, but even that proved insufficient for adequate clearance. I opted to keep it, however, since it allows me to adjust the coupler's set screws while the hot end is lowered onto the bed plate. Furthermore, I believe this configuration contributes to increased stability of the Z motor, which tends to wobble unless its screws are constantly re-tightened.