Mitcher T
SO Tech Expert/Sponsor
We use wet-sanding stones here. You can get them at any auto body supply store. They look like small knife sharpening stones. If you use a 400 grit stone with some mild soapy water, it will knock down your touch up exactly to the surface. Once there, then finish with some 2000 grit wet paper by hand (lightly) and it will buff back. White is very forgiving and Imron does buff back. Not as easily as other paints, but it will come back if you are patient enough.