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Well, the trick to painting questionable surfaces is sanding with the finest grit sandpaper or steel wool you can get. Clean first and as far as an automotive surface, make sure it's free of all wax or silicone based products. You could sand and use a liquid deglosser just for sh*ts and giggles if you're unsure about invisible waxes or silicones. The deglosser would dissolve these.
The most important thing is to give the primer and finish paint a surface to bite into or grab a hold of. The finest steel wool might not look like its scratching but under a microscope you'd see them. Those microscopic scratches are exactly what the paints will sort of sink into and create a bond.
Again the XIM product is amazing. I've used it on aluminum, glass, porcelain tile, formica and other questionable surfaces with great results. Another trick to the ultimate bond and finish is 5 or 6 light coats are better then 3 heavier coats. Be patient and allow the drying time between coats per the can instructions. Paint the surfaces at room temperature and keep it at room temperature until the paint cures.
One thing they hesitate to mention on these cans is, any and all paints need time to cure. Not dry but cure. The chemicals need time to react with each other after their out of the can and this can take a minimum of 3 days. As long as 30 days in some paints
chinaman,,,,Painting chrome should not be a problem but I'd definitely go with the XIM primer in this application. You'll notice the XIM sprays out of the can in a very fine mist. It does this for the reason I stated above. 5 or 6 light coats are better then 3 heavier. In the case of a primer you really don’t want to apply it heavy anyways. A bonding primer is not meant to have hiding power, only to bond. Building up a heavy primer isn't a good idea in this instance. Don’t skimp on the quality of the finish paint. You only get what you pay for.
One thing I do want to caution everyone about. When painting plastic surfaces you really need to investigate your paints. Believe it or not some plastics are the hardest surfaces to get a bond on even with the best preparation. Make sure they're not manufactured with ultraviolet protectors. These invisible UV protectors will push even the best primers right off their surfaces.
PIMP….. No it wont make it a brighter black but beware the flat finishes will need painting more frequently. Most if not all paints are manufactured or created as high gloss. Flat paints have additives to make them flat, which reduce their qualities.
Dayum, this is a long post.
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I went down into the cities beneath the earth. To the people of the past. Then a voice, a beautiful voice lifted me from my pit.
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