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OK, update here. Well.....er, ahhhh....DON'T use Oxalic acid on razors unless you want to oxidize and etch the daylights out of them.

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I bought some powdered Oxalic at Ace Hardware...

I know it's also used to get the grime off wood (decks and such). Did you use it "full strength" on the bike parts? Did you just wipe it on and off rather than soak it in the acid?

Chris L

I was reading about metal oxidation recently (black oxidation spots on some of the restos I'm undertaking are my nemesis, not rust. I want them gone and don't want to sand them out) and came across...