I'm going through my parts to clean things up and put on bikes and have a good half dozen rims apart with rust on the drums.
Some are minor and clean up with sandpaper or a metal brush on a drill, but a few are really nasty and I'm not making any progress fast.
The local auto parts store can use the same machine on drums as they use on discs, but the inside diameter of the rim where the axle goes is too small for the machine.
They suggested renting their cylinder hone. I figure I could use a drill press to hold the hone straight and clamp the rim down on center. I'd start with the better rims first and work my way up to the nasty ones. Theirctools are under warranty so they don't care if I bring back nasty stones on their hone.
Are there other methods to clean drums. I'd hate to toss a rim just because of stuborn rust.