On my last few restorations, I noticed something. I live in a very dry area (were right off the Mojave Desert), and rust is almost never a problem in games I pick up locally. However I have noticed that the dust I am finding on parts in games has eaten into the finish to the point that it looks like corrosion. Case in point: a roll tilt assembly out of a Firepower I'm working on:
This is the top view. Ive wiped all the loose dust off the part, but the remaining dust has eaten into the plating, and stained the metal. I am going to have to either repaint the part, or buff it out. Has anyone else found a way to deal with corrosive dust besides re-painting/re-plating the part?
Why does dust do this?