So, I have an interesting problem.
I need to engrave the outside a thin aluminium ring (diameter between 45 and 60mm). The characters would only ever have to be about 3mm high.
(I build custom camera lens mounts and things like a distance scale and serial number would be nice to have).
Now, I understand that the eggbot is intended for spheres, so, I guess my question is: would the minimal height required for the characters really be a problem. Thinking of a 100mm sphere, the curvature on the top really wouldn't be that big, would it really be an issue to draw 2-3mm high characters on a cylinder? (assuming the characters are perfectly centered under the pen).
Holding the ring wouldn't be an issue. I tend to build jigs for myself for this kind of thing anyway.
The engraving itself could be done with a very small engraving pen, since the aluminium (or nominally, brass) would be coated/anodized black, so, the actual engraving can be very shallow.
If an eggbot wouldn't work, any suggestions on what would? This is a hobby for me, so a commercial cylinder engraver isn't really an option ($$$). I work as a software engineer, so, while building the physical engraving machine would be fun, too much software to write for it would make it feel like work, not a hobby (hence my reluctance to go with a DIY solution).
Any help/advice would be welcome.