by astrosa
There are several methods of stripping paint of plastic models. One of the most common products is Chameleon paint stripper, which can be difficult to find but reportedly works very well. I often use Polly Scale's E-Z Lift Off (ELO) which works on most paints and does not seem to harm the plastic. Ordinary Pine-Sol works on some types of paints as well, and so does 91% isopropyl alcohol. Another common but somewhat messy alternative is to use automotive brake fluid.
Note that what these solutions really do is soften the paint and loosen its adhesion, and then you'll need to scrub it off with an old toothbrush. This is best done in a sink so you can rinse off the model as necessary. It's also a good idea to lightly wash the model with soapy water to make sure none of the stripping agent gets left behind, since it might begin to attack the plastic if left on for too long.
Note that what these solutions really do is soften the paint and loosen its adhesion, and then you'll need to scrub it off with an old toothbrush. This is best done in a sink so you can rinse off the model as necessary. It's also a good idea to lightly wash the model with soapy water to make sure none of the stripping agent gets left behind, since it might begin to attack the plastic if left on for too long.