Bear 2.1 linear rails addon + 3dBrain purge mechanism

This is my new step to add MMU to my Bear printer (source project found here) it's ready for a extruder that uses bl-touch

Because of purge mechanism it's no more possible to use couplers on Z stepper then original like Z stepper motors must be used.

Due to this change I had to move back to original Prusa Nuts (here because x-end-motor is re-added).

3dBrain Purge mechanism is directly mounted to x-end-idler block.

Also because of z mounts are near the bed than prusa right z motor mount has to be different from left to add missing space.

Please note that x-end-motor can also mount an endstop. On my printer I removed the sensorless homing but it's a personal choice, I also added all components to adopt such change

19/08/2022: Added some fusion360 source files

20/08/2022: Added some other fusion360 source files

Original Gcode to be used to calibrate device