Is within a opening to remove rust from the surface of sheet metal short the use of grinding?
Answers: If it's just some surface rust you can try WD40 and a scrub wipe. Sand paper or steel wool is also an likelihood. If it's heavier you could buy a rust remover called Naval Jelly. You can achieve it at most hardware stores. It's usually pink. It will remove the rust buy will leave some black spots behing that would inevitability to be sanded to gain back to out in the open metal.
use this, me. after it dries you can clean it beside a nylon scrubbie and re-treat it and your rust will never return.
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