Prusa X Carriage with integrated Z Probe and Fan Holder

A new x carriage for prusa style printers (rod distance 50mm) with integrated z probe and fan holder. The arm of the retractable probe is designed to press against the carriage so the probe does not change its z position over time.
The carriage runs on 4 lm8uu bearings which are ziptied for easy removal. A 40mm fan can be attached on one side. A retractable z probe (just a 9g servo and a microswitch required) fixes all your bed leveling problems. On the back side the carriage has the same mou