Suspend your rusty part from the pipe or stick with wire, submerged, making sure it does not touch the steel basket lining the bucket. Do not use copper like I did. Use steel wire, the same as for the cage. Make sure the two poles ( positive and negative ) never touch.
Make sure your work area is well vented! Unplug your 12-volt battery charger. Set it to about 2 amps. Hook the positive (red) lead to the bucket basket and the negative (black) lead to the rusty part lead. Plug the charger in and look at the meter; it should be drawing about 2 amps. If it is a lot more or things are smoking, UNPLUG! The part will slowly start fizzing. When it stops (a couple of hours later, depending on the part), unplug your charger and remove your part. Clean the black slime off of it and paint or oil it to protect it.
The water is NOT toxic; it is safe to pour down a drain. It is just soap and steel. The process should have removed any loose paint also.
This can be made from scrap materials and recycled or re-used when finished. It is very simple to make when you understand the simple process, You can improve on your next one! It will not last, the cage is a consumable. Build it custom for each project, do not over-think this. K.I.S.S.
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