You should keep your clips above the water otherwise the process will corrode them. MMwhat do we call this process, Electrolysis or electro plating? dunno, but it's good at turning rust back into usable material, only limited to the size that will fit in a bowl of water with some caustic soda in it, red on the sacrificial piece of scrap, black on the piece you want to save/improve/derust.
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you can see tiny bubbles emitting from the edge of the rusty brake backing plate. making sure they don't come into contact with one another or a fuse will blow in the battery charger.
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