This Old Tony’s video inspired me too… Did some digging and came across this old MPCNC thread from 2017…
Looks as though he leveraged the bilinear bed mapping where you specify the RLFB boundaries of the piece to map, along with the grid size when you call G29…
Another approach would be to script Gcode G30 calls over this area to create a surface height mapping file in python that you could then load into the G-Code-Ripper to apply your 2D carving over the mapped curved surface.
I’ve started experimenting with both approaches, by simply mounting an endstop microswitch attachment to my mount… not fancy, but as long as it doesn’t move, then I believe that post-mapping, I will only need to re-zero with my vbit to the exact same point and that should do it…
MPCNC Community project to get this new capability up and running?