[dconant]

Hello, I have a Philco 91 where the tuning condenser fins are rusty. I magnet sticks to them so they can't be aluminium. What would be the best way to get the rust off and preserve them from rusting again. It is just surface rust. The chassis has surface rust as well so I figured I would use naval jelly on that.

Thank you,
Dan

[RodB]

You could soak the fins in vinegar. You have to be careful if any pot metal is involved because the vinegar will dissolve the pot metal.

[RossH]

I would try Naval Jelly and use a soaked pipe cleaner to get it where it needs to go.