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Re: Vinegar to prep metal?
Actually PPG DP40LF used to recommend phosphoric acid prep followed by phosphoric acid with zinc. This was only 10 years ago. Metal prep used to be very common across many paint lines.
Quote:
Originally Posted by Foot Stomper
Any treatment that involves acid or water as a followup is likely to contribute to rust or coatings failure.
I say this because I've never seen in a technical data sheet (I've read many in the coatings profession) where acid or water is recommended or mentioned.
What I have seen repeatedly is clean, bare steel coated with epoxy primer, then top coated. Absolutely no mention of acid or water...
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Saskatoon, Saskatchewan
Canada
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