This may be of no help at all but I used my 3018cnc as a pen plotter (drawing with pen essentially) by using vcarve software. I basically just used the pen insert rather than the spindle and the software did the rest as I told it to engrave at a depth of only 1mm. This mean the pen came into contact with the medium (wood etc) but didn’t push the pen down any further.
The pen raised and lowered as if it was a spindle CNC cutter across the pattern.
I generated the code in vcarve and then used candle to send it to the CNC…
