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1. 
   JohnWW | Feb 25, 2008 06:24pm | #1

   The only chemical I've ever used to remove rust from a cast iron table is elbow grease. You can use fine sandpaper around a padded block or on a random orbit sander. Steel wool and scotchbrite also work well, but I prefer the sandpaper for large flat surfaces. I use the abrasive dry but keep a few paper towels handy, slightly dampened with a light oil like WD-40, to wipe up the dust as I go.

   John White