I just found this string a few weeks ago after I had purchased a 15 year old fuselage for a Midwest Extra 300S that had a large "splat" of an unknown grey paint right on top of the canopy. I tried this method of removing the paint and am happy to report it worked like a charm. I dabbed on some Dot 3 brake fluid with a "Q" tip daily and after about 4 days noticed that the paint was softening and I could peel layers of it off with a #11 exacto blade. the canopy wasn't affected either so this really works! It sure beats the heck out of trying to find another canopy for this old bird.
Thanks to Aerowolf for sharing!
Rocky1405[8D]