Gary,
Sorry it took me a while to answer - I didn't realize that I had a response waiting. Yes, I have used the really fine wires before - the kick for a while when I was much younger was to take a Buffalo nickel, drill a starter hole in it, then either cut the detail of the Native American (note political correctness) out, or the buffalo on the reverse. Cool, but a waste of a coin (unless the date was unreadable). A bit of labor, but easy to do if you took your time. Fine enough for your detail work ? Likely -
Regards -