If the outside of the ring is intact, I will touch it up by hand with Liquitex acrylics. If not, I use a variation of this method:

https://picasaweb.google.com/118003252068396696045/PopACircle

Usually, now I find the center of the circle by putting down a small piece of tape and striking 4 arcs from the edge of the circle. This will locate the center. Then I put down friscut and cut the circle using the center that I just found. I also bought a few nice compasses on flea bay.

I have yet to find a paint marker that doesn't bleed under a cc, especially a 2 part auto clear.

For ***very*** small areas, I will spot clear with acrylic lacquer, if that was original to the machine, or for ****very****very**** small, a quick swipe with clear nail polish, which is essentially lacquer.

Another option for very small areas is to slap some mylar on it. The removable stuff is best, but it appears Mark Clayton is still not up to speed since his illness. You can use clear vinyl laminating film as a removable mylar as well.

A total clear coat is the best overall solution, if it is required.

What is the material you are using, exactly?

How do you position it? This looks promising. I think the cutter may be overkill and I would likely use my cutting compass, but I would like to maybe try it with the material you use.

Thanks.