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On 20 May 2004 at 8:11, Kevin Guarnotta wrote: > I thought acetic acid would be similar to phosphoric acid which is what is > in all those rust eaters. Stuff like naval jelly.... I think the phosphoric acid treatment of metals may also include other chemicals, but I'm not sure. At any rate, it seems clear that if any acid would work they wouldn't specify phosphoric. IOW, I think there's something special about what phosphoric acid does to ferrous metals. It may also have something to do with the particular by-products left behind and how these react with your primer. > I think acetic acid and vinegar are the same, aren't they? Right. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org