General Category > TMC3in1 FAQ

What does the THC ON/OFF button do on the main screen?

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Beginner:
What does the THC ON/OFF button do on the main screen?

RandyRay:
When OFF, you will cut your metal, but not adjust the Z height via THC.  When the THC button is ON, the Z axis can be adjusted via the TMC3in1 THC Up and THC Down signals.  If your button will not turn on, it is because you are in the Demo Mode of Mach3.  You must have a licensed version of Mach3 for this button to activate and THC to operate.

Randy

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