I mean I think water vapor would be plausible since open heart stacks were high up. I run a dehumidifier where the layout will go so I feel like that could work. I guess that a nickel track shouldnt rust.
I'll be making a decision sooner than I think I tore out most of the cruddy shelves that were in the way. A weekend worth of wall painting and I should be able to start bench work and figuring out how to fit this all on the layout. I lost this weekend because I had to work