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Old 7th December 2016, 11:16 PM   #15
ariel
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Join Date: Dec 2004
Location: Ann Arbor, MI
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I have shown this 15 cen excavated Bauernwehr before, but think it might be useful here.
Stabilized with tannic acid.
There are commercial Rust Converters: tannin, polymer and a bit of phosphoric acid
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