Hi Julien, thanks for the response. I have only used the Carbide Motion ‘Machine Setup’ wizard and selected VFD Spindle. I’m not sure, although read some references, what GRBL is and how I confirm whether it is set correctly?
I can run a toolpath with a ‘safe zero’ and see what happens but, the GRBL setup may be the step I’ve missed?
Is this thread what you are referring too? Setting up vfd, rpm
Woz