To extend consumables lifetime and to avoid ugly holes I want to stop the plasma cutter (hypertherm) while still cutting a hole a small amount of time before the hole is completly cut or during a lead out path which could be along the cutted hole like this is suggested in the true hole process which is patented by hypertherm.

I was wondering if this is possible using mach3.
I use Sheetcam and Mach3.
I have not found a possiblity for this in sheetcam.
I think about modifieing the code when cutting holes but a have no idea how to switch off the plasma lets say 300 ms before the hole is ready.

Did someone found a solution for this or for the whole problem?