Black dots in the cast aluminum - Plating Powder Coating Buffing Anodizing

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Black dots in the cast aluminum

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04-11-2006, 09:23 PM

dekebell

Newbie

Join Date: Mar 2006

Posts: 7

Black dots in the cast aluminum

I am still having a problem with cast aluminum, such as intake manifolds. I am getting black dots impregnated into the aluminum that are showing quite vividly after PC'ing. I use 80g alum oxide, my air is super dry and clean. Please help.

Thanks in advance,
Deke

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