Originally Posted by Dude
Originally Posted by madeinuk
If you really want to geek out the teacher then:-


Rust reversal

That's not reversal, though, that's removal. The oxidized iron doesn't become un-oxidized, it just falls off.

I stand corrected, it's the black rust that will rebond not the red although phosphoric acid will turn the res into black after which the above would then work. Yes?

Become what you are