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franken · 05-10-2018, 08:11 PM

I researched this years ago, so things may have changed. The info I got was that the toxic bit gets in the lap joints (all bodies have lots) and never comes out. Then paint near those joints fails after time. Maybe with a dip neutralization process rather than pressure wash, that could be invalid.
Another issue is now you have clean metal that wants to flash rust unless dipped in a rust inhibitor such as a phosphoric acid solution. Lots of that metal is in places that will never see paint. Crazy as it may sound a dip in some sort of primer is a good answer, but who has a vat of primer?

05-10-2018, 08:11 PM	#7
franken Registered User Join Date: Jun 2013 Location: Somewhere Posts: 3,052	Re: Acid dipping to remove rust/bondo I researched this years ago, so things may have changed. The info I got was that the toxic bit gets in the lap joints (all bodies have lots) and never comes out. Then paint near those joints fails after time. Maybe with a dip neutralization process rather than pressure wash, that could be invalid. Another issue is now you have clean metal that wants to flash rust unless dipped in a rust inhibitor such as a phosphoric acid solution. Lots of that metal is in places that will never see paint. Crazy as it may sound a dip in some sort of primer is a good answer, but who has a vat of primer?