I bought a metal replica helmet 3 years ago. I had it in storage for the last year, and recently took it out for display. The helmet is black metal, and while in storage, has accumulated some rust on the surface area of the helmet. Is there a tried-and-true method for taking the rust off aside from sanding it off and/or painting it? It's a great piece, and I don't want to risk messing it up.
Thanks in advance.
Thanks in advance.