Before / after pics? Could you do this with a gas tank?
I spent some time yesterday researching the topic.
Theoretically, it will work on a gas tank. However, there are physical aspects of the process that might make it difficult to do on some parts.
The process relies on anodic/cathodic electrical stimulus, of which the part to derust becomes one electrode.
From one of the articles found through Google:
" The process works best "line of sight" so to speak, so multiple electrodes are often beneficial. Arranging several accumulators around the perimeter of the solution tank generally works well, and minimizes the possibility of short circuiting.
CLEANING: When objects are removed from the tank, they will often have a black coating that looks like the object has been smoked. This is normal. The best way to remove this coating is to wash it using a stiff brush in a solution of dish soap and water before the coating dries. If the coating is allowed to dry on the object, it will be nearly impossible to remove."
The black coating, as I understand it, is deposited iron.
Cheers,
