No for cleaning, but I will periodically polish the chambers in my 625 with a felt and a little JB. I do lots of dremel work however. As a metalworker though I must say that if you do not know what you are doing drop the Dremel and step away from the gun! I've done much feedramp and chamber polishing, chamfered the charge holes on the 625, polished every moving thing in a Glock several times, Chamfered the loading port on my 870 so I could reload quickly without ripping my cuticles off etc. Mainly stuff that shoulda been done at the factory if guns were made well.
I'm into a project 1911 right now, used the dremel in conjunction with a tig welder, files, and belt sander to fit a magwell, polish out many years of dings, refit the rails etc. I will have the world's most expensive Sistema when I'm done, but the chance to tinker on a piece of metal at night is relaxing.