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Originally Posted by sdalcher  I ran across a technique for removing heavy rust from steel and iron. It consists of filling a nonconductive container with water adding sodium carbonate (pool additive to raise PH) teaspoon per gallon of water. You then attach a battery charger (car variety) negative electrode to rusyed part and then attach positive electrode to a piece of scrap steel. Caution are to wear protective goggles, do not allow the + and - charged parts to touch, dont reach in the water while connected, etc and use in a well ventilated area as hydrodgen gas is a by product.
Supposedly this process will not harm the base metal, no matter how long left in process.
I have several old sets of tongs that I would like to treat. I picked ouy the rusyiest set and hooked them up. Witin 10 minutes I had bubbles forming. After a couple of hours there was already a noticeable difference, I can't wait to see what they look like in the morning.
Steve |
You can do the same thing with borax and a car battery charger. It will also put a layer of black oxide on the part to help keep it from rusting again.