Restoration Commence.

Jered,

I buy a pack of ~6 assorted wire brushes for electric drills at Harbor Freight on sale (~$4.) Usually the disk ones work best, and the small ones for inner corners. When the rust is minimal, it comes off as fast as you move the brush. Sometimes it looks bad, but cleans up fast. If pitted, you can work a long time and never get all. Then have to look at rust converters and epoxy fillers (Bondo). As you work, some wire bristles disappear. Some fling towards your eyes, so wear good glasses, goggles, or face mask. Before priming go back over with sandpaper and/or Scotchbrite, and clean with solvents like alcohol, laquer thinner, MEK, or acetone. Also, first clean oil or grease with gasoline, kerosine, or mineral spirits.