Derust inside seat tube, sanding device

[Indyjps]

Got an aluminum seat post out of my bike that been stuck since the 90's. Wanted to clean up the inside of the seat tube.

This is a fiberglass rod tent pole, but I've seen these fiberglass rods at home depot for driveway reflectors. I clamped it in the vice and split it about 2 inches up with a razor knife.

Emory cloth would be best, didn't have any, so I used drywall screen and sandpaper, put it in the drill and wind the paper enough to fit in the seat tube and spin it up.
Can also use a rag in this to apply grease all the way thru the tube.

 

[LukeTheJoker]

Cool stuff, never thought of flyscreen!
Here is my method, very similar: http://www.ratrodbikes.com/forum/index.php?threads/how-to-sand-ream-a-seat-tube-fork-tube.85844/

 

[jpshaw]

Could use a 12 gauge wire cleaning brush fixed to a sectional cleaning rod. If you will unscrew the part with the handle the remainder will also fit into the chuck of a 3/8 inch drill.