Hi Andy,
When you say 'acid treatments' what do you mean exactly?? POR-15 sells
a prewash that is phosphoric acid taht dissolves the rust. Is this what you
are talking about?? What do you mean they activate metal??
Thanks,
Daniel 69 2000
SF CA
> I don't reccommend sand blasting. We researched rust
> removal by media/sand blasting and found some
> interesting results. The rust forms pits in the metal.
> Some of the pits are so small that it takes a microscope
> to see them. When you sand blast the metal it takes the
> high spots around the pits and folds them over the
> rust. The surface looks clean, but there is hidden rust
> buried under the folded metal on the microscopic level.
> The only real way to completely get rid of the rust is
> chemical immersion. Stay away from acid treatments
> because they activate metal.
>
> Andy
> > I would try to remove all the rust before applying the fiberglass by either
> > sandblasting or glass beads or by other means. I wouldn't depend on a rust
> > converter to stop all the rust.
>
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