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  1. Lust4GreenSteel

    rust removal help, phosphoric acid

    Vinegar - miracle product Hmmmm, I have used vinegar on galvanized metals to compromise the coating so that it WOULD RUST. But, if what you say is true, vinegar is a LOT cheaper than OSPHO.:)
  2. Lust4GreenSteel

    rust removal help, phosphoric acid

    More OSPHO info Quoting from the OSPHO jug. OSPHO is a rust inhibiting coating -- not a paint. You do not have to remove tight rust. Merely remove loose paint and rust scale, dirt, oil, grease, and other accumulation with a wire brush -- apply a coat of OSPHO as it comes from the container --...
  3. Lust4GreenSteel

    rust removal help, phosphoric acid

    Ospho I have used a product called OSPHO (contains phosphoric acid) to treat raw steel. I acquired it from a marine/boat product catalog whose name escapes me. The company that produces it is the Skybryte company in Cleveland Ohio. It is somewhat expensive, but I did 20 4in I-Beams (20...
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