Geeetech Aluminum Prusa I3 Floating Z Axis

It's near impossible to center the z axis threaded rod in the couplers provided with the kit. Instead of screwing the threaded adapter directly to the z axis carrier, mount it to this to let the z-axis carrier "float" on the threaded rod and drastically reducing the wiggling introduced by a crooked or off-center threaded rod.

This version requires an additional 8mm of vertical space below the carrier and above the coupler which can cause issues if the coupler isn't sunk down as far as possibl