A friend of mine who rebuilds Jeeps as a hobby asked if I could engrave on aluminum. Research revealed Cermark so we agreed to split the cost of an aerosol can , Great so far! He left two aluminum dashboard knobs on my workshop door, opened them and horror!! they have a slight curvature on the end to be engraved. My question for my Epilog Summit is how much curvature can be handled prior to the beam being unacceptably out of focus? As a photographer I would stop down and focus 1/3 of the way into my subject but this of course is projecting light the other way.
Any help would be appreciated.
Mel Davis
Novice