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Paint prep question, HELP!
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<blockquote data-quote="PSG-1" data-source="post: 234217" data-attributes="member: 6937"><p>If you're going to use primer, be sure that is is zinc chromate, as this is the only type of primer that will stick to aluminum. </p><p></p><p>It's best to use some phosphoric acid to etch the aluminum, then rinse and dry, before priming. If it has sat for any length of time after being sanded, etched, etc, you have to remove the layer of aluminum oxide for proper adhesion of coatings.</p></blockquote><p></p>
[QUOTE="PSG-1, post: 234217, member: 6937"] If you're going to use primer, be sure that is is zinc chromate, as this is the only type of primer that will stick to aluminum. It's best to use some phosphoric acid to etch the aluminum, then rinse and dry, before priming. If it has sat for any length of time after being sanded, etched, etc, you have to remove the layer of aluminum oxide for proper adhesion of coatings. [/QUOTE]
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Paint prep question, HELP!
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