01-07-2008, 12:10 AM
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Experienced Metal Finisher
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Join Date: Jul 2005
Posts: 443
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Re: need help with surface prep
Quote:
Originally Posted by fourkbmx
i need help too, i prep my piece by using scotch brite, then clean with thinner, then dip in caustic soda, rinse, muriatic acid, rinse and then ano tank. my problem is that after the ano tank it seems like it was dirty underneath the ano film, it looks like little black filaments.
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Do not use muratic acid or hydrochloric acid on aluminum.
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