I have not had an issues with rust. My case sits in a bathroom drawer. I thoroughly dry them after use with toilet paper and coat them lightly with mineral oil. Before I made the box, they just sat in the drawer on a cloth. Worked for many years and I've lived in CT, West Germany, KY, MD, NY, and NH and travel quite a bit to FL. No issues but I do keep an eye on it - time will tell.
Adam
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