Thought I would post a few pictures from my current oxalic acid rust campaign. I saved up about six bikes, so I will be treating parts for the next couple of weeks. The campaign starts with my kiddie pool, direct from the local Xmart store. Added almost 20 oz of Oxalic crystals from Sherwin Williams (they come in 12 oz tubs, so I used a little over 1 1/2 tubs). The first pic shows the pool in action. I have a homemade dam in the pool, as it is a little bigger than I need. I then have a few pictures of steel/chrome rims from a recent garage sale purchase, a 1971 Schwinn Racer. I think the transformation speaks for itself. One thing I really like about oxalic is that it does all the work for you. You just set it in the bath, leave it, pull it out later, neutralize with baking soda, rinse it off and wax it.
Be sure to read all of the safety warnings on oxalic, and be sure to protect your hands and eyes!
But no scrubbing, rubbing, no abrasives, no nothing, just time. This wheel sat in the bath for 2 days.