Originally Posted by
Pete123
I learned about using copper when learning how to preserve civil war guns. With museum things you want to preserve what is there and not make any changes. the copper won't change anything, but will remove rust. It leaves copper colored lines, though they wash right off.
The magic is that copper is harder than rust but not as hard as steel or iron.
A little piece will last for years. Send me a private message with your address if you would like a piece and I'll drop it in the mail if you are in the US where I can use a single stamp.
If not in the US, 24 gauge copper sheeting works fine. Most electrical wire is pure copper. You could try it on a razor that isn't your best one to make sure.
Once the rust is removed, you can prevent further damage with with oil. The museum folks use Ren Wax.