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Hi all,

I'm at the point with only a few weekends left (in fall) that I can paint some more parts... After stripping the horns, I used the Eastwood Afterblast (phosphoric acid) as a final prep before painting. Well, after drying, I am getting a white crust on the part of the horn that is cast (potmetal or aluminum). Even after re-washing with a mild detergent and re-rinsing, it's still there.

I'm not sure that it is from the acid as I remember washing an aluminum head from a compressor and getting a crust after washing it with water. Is this thing leaching a salt? Should I try vinegar to neutralize? I have posted a question to Eastwood to see what they think.

I know there are a couple of chemists out here in Packardinfoland, and I thought that you guys might have some idea.

Thanks!

MArk

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I would disassemble the horns and refinish. Not too difficult a job and they look better afterwords.

(o{}o)