[Torsten]

I mainly engrave jewelry, so one problem I've repeatedly run into is finding a way to get my engraving perfectly centered in a circular area. Alot of engravable charms and pendants are round and roughly coin-sized, so even a small deviation from the center is very noticable.
My question: does anyone know a good way to pinpoint the center of a circle? I usually end up taking 15 minutes adjusting and estimating and still sometimes the engraving looks off center.

If you have some visual edges to pick up you could Draw them right into your Cad file.
Then use a Wiggler as your first Tool and have the Program position it at the quadrant points of your shape, like stop at the top center then bottom center then Left and right respectively.
Each stop would give you a chance to make small corrections to your offsets.
A visual check with a wiggler can get you to better then .005" if done carefully.