how to remove rust

Gray or red Scotch pad, a random orbit or finish sander and some light oil. Used this on my table saw and it worked perfectly without doing anything to the cast iron except cleaning it.

-- "The U.S. Constitution doesn't guarantee happiness, only the pursuit of it. You have to catch up with it yourself." -- Benjamin Franklin

T-9
http://www.woodcraft.com/product/2000984/208/t9-rust-free-845-ounce-pump-spray.aspx

actually just by the set

http://www.woodcraft.com/product/2000984/3401/large-total-tool-care-kit.aspx

Which ever method you choose to remove the rust, apply a coat of Johnson’s paste wax afterwards. And re-apply as needed. Make it part of your preventative maintenance

-- Measure "at least" twice and cut once

The Rust Free is good stuff. Smells bad, but sure takes a lot of the work out of rust removal. I give my TS a twice a year treatment with the T-9 and Johnson’s paste wax. Johnson’s is cheap and readily available. Works great.

-- "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so." - Mark Twain

IMPORTANT! RustFree is good at removing rust BUT DO NOT SPRAY DIRECTLY ON THE METAL! Spray the product on a rage and wipe it on. If you spray directly on the metal you find a permanent splash mark on your jointer that will out live you.

FWIW, I picked up a used jointer on CL maybe 3yr ago and it has this very same type of mark on it and it does NOT come out. Head’s Up!

-- HorizontalMike -- "Woodpeckers understand..."

No pictures. Didn’t happen. ;)

-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

I just finished cleaning up a jointer as well. I used mineral spirts and wet/dry sandpaper. With the mineral spirts on the table I started with 220 grit wet and dry sandpaper and using full strokes go from one side to the other. I did several times Until I felt no odd surfaces remaining. Cleaned, checked if smooth, followed the same process then went to 240, then 280, then into the 300’s, then 400’s then finally the 600’s. Wiped clean then cleaned with paint thinner. Wiped clean several times then applied three layers of johnson’s past wax. It turned out very nice.