I've noticed a couple of times the my Epilog 60 seems to have a problem consistently cutting and/or engraving circles.
The pic above is a sampling of what I'm talking about. You will notice that the boarder of un-engraved area around the edges is not centered on the cut circle. The file has them perfectly centered on each other and I've had pieces come off the laser bed that are perfectly centered. It appears to be worse one on printing than it is on another. I've not ran enough sheets thru to confirm this, but I think it happens more when working with wood than it does with acrylic.
Any thoughts on what could be causing this just part of the time?