Probotix website wrote:This machine is supported by the FireBall CNC Yahoo Group. Feel free to drop in there to learn more or to ask any questions before buying.
Not knowing this machine, I do not know if this method will generate a problem when homing so be careful:
-switch off the CNC
-release the tool in situ if it is stuck in the material (try rotating manually the spindle)
-if the Z axis is not the first move when homing, then move the Z axis by hand using the Z coupling device
-switch the machine on and run homing. Be ready to use the security switch
It only makes sense if you can get the tool out of the spindle, which depends of the tool length, the Z position and the Z travel.