[ohboy321]

I use reverse electrolysis to clean rust off of antique lanterns. It involves submersing the lantern in a solution of water and something to make it conduct better (washing soda), and then applying a low voltage to setup using a battery charger.

In my picture below you can see that I line the outer edge of the bucket with rebar. These are sacrificial and will rust up during the process. Connect the positive (+) lead to the rebar, and the negative (-) to the part to have rust removed. The lantern "after" picture below took about a week in the tank. That lantern is about 120 years old.

The process works very well. Reverse the leads if you want to make a new part look old.

I saw one guy make a large tank to de-rust a frame.