I have a challenge.

A whole heap of parts with a spherical surface which I'd like to engrave on.
The radius of the sphere is 40-41mm, looking down from the top I am only interested in the area between a 32mm and 12mm circle. Looks like a disc from above but has a spherical surface which drops away to each side.

The total height change from the 12-32mm diameter edges is less than 3mm.

Can I produce a set of surface co-ordinates which I can then apply to each job and just create the engraving lines/text in the way that I would for a flat surface?

I'm seriously impressed with CAMBAM's feature set so far, but all I've tackled is 2.5D work. This is where it starts to get tricky.