Cleaning dried paint from from plexiglass
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I bought older house with paint on door plex windows and did not want to spend a lot on repairs. Nail polish remover worked wonders. Window cleaner after. No scrubbing no scratch.
i have the same issue. alcohol didn't work, neither did mineral spirits. acetone sorta worked. but it left a smeared mess. so i'm hesitant to try non-acetone nail polish. i have an entire screen door that's painted that i need to remove paint from. i tried one patch & it's just a mess now. scraping won't work- it will just be scratches all over. i don't see a magic eraser doing a thing to remove it, much less vaseline.
Rejoice! I have cleaned old paint from clear plexiglass!
Use a pencil torch to melt the paint very briefly - just enough to see it go runny. Wipe off with a cotton cloth. It will leave a milky residue which can be easily polished off with 'extra' cut car polish. Use a scraper with a 45deg edge made of plexiglass to scrape smaller residual patches.
Do not dwell on the heating! - as soon as you see the melted paint on the surface just wipe it off. Absolutely no damage to the plexiglass, clear as a bell.
I tried mineral spirits and goof off. The chemicals made me nervous & didn't work. I didn't want to use any abrasive. I wouldn't even tempt a hot gun! However, I was using a wood paint stick hoping not to scratch it. I was doing it under hot water - I was making progress!! So I submerged it in the bathtub with the hottest water possible and took a nylon dish scrubber to it. It worked!! The heat of the hot water and then the scrubber took off all the over spray of cabinet paint from my spray painter.