Plasma cnc wont move with torch on

It has no issues moving any other time. Please help ASAP @randyw @Tim_Sawyer

@rlisbona @TBJK

Just saw this. I’ve never seen that happen other than when the torch height control isn’t working. Symptom is it starts the cut then Z axis goes too low and the head crashes into the part, but XY axis drives keep trying to move the head. Using the ground clamp on the part might help, also if the stock is flat you can turn off THC.