Reply To: Rust Removal by Diet Coke bath
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I found some rave reviews for a product called Evapo-Rust and have been trying that. It seems to work nicely and, much like Diet Coke, it is not scary unless you try to drink it – it is biodegradable. I have wondered, though, if it is basically just citric acid plus a few handy additives.
(The Evapo-Rust add copy claims it is “not an acid”, but I wonder if what they mean by that is “this is not one of those SCARY acids like naval jelly or phosphoric acid”, rather than “this is literally not acidic in any way”. Maybe I should find some litmus paper or a pH meter.)