Hi Oscar, If there is any chance that there may be ANY silicone within a quarter mile of anything you might want to pain then it is too close and you are screwed. First rule, silicone and paint don't mix. Treat them like the two components in a binary bomb.
Go down to your local auto paint supply store and get some solvent specifically designed to get rid of silicone and try that. Oh, did I mention, don't even purchase anything with silicone in it because it is like Pro Seal. Ask Dana Overall, or any RV builder, they will explain it to you :-) If it is aluminum, try the standard RV metal prep practice: 1. Wash with Dawn dish washing detergent using a scotch brite pad to scuff up the surface. 2. Thoroughly rinse with clear water. 3. Acid etch 4. Treat with alodine. 5. Prime with Napa self etching primer. 6. Paint with your paint of choice. Steve Eberhart Oscar Zuniga wrote: >Group; > >I've had problems painting metal parts, both steel and aluminum. Some parts >will take the paint perfectly, but other times it's as if there is something >on the metal that repels the paint and I get little voids and imperfections. > Cleaning with hot soapy water, MEK, alcohol, or degreaser don't seem to >make any difference... there are little areas that just won't take the >paint. > >Is this maybe some silicone from a cleaning rag, or something in the pores >of the metal? Any ideas? > >Oscar Zuniga >San Antonio, TX >mailto: taildr...@hotmail.com >website at http://www.flysquirrel.net > >
