Ok, sheetcam is fine, now i have still problem with torch height.
If i cut some small holes, then i have the error " Valid Arc Lost" or "Float Switch Activated Program Paused"
I think, that if i try cutting through small steel plate (thick 2mm), then the problem is more frequent, because the steel still bended.
Maybe some bad settings .....i tried change the 'cut height' from 2 - 4 mm and 'feed rate' from 200 - 2000 mm/min.
If i tried cut for example "STAR" into big steel plate (thick 3 mm), then all is OK.
My last question is : the PROMA THC is set now for 162V. This voltage must be changed for different thick of steel plate or is the stable one value ?
Many thanks,