The described method using the car battery does work, although amaturish. It is not near the same strength as the professional redistrip program though. The battery and baking soda method still leaves black ore in the pits, great for loose and surface corrosion only.IMHO
For those wanting to remove ALL of the rust down to the white metal go purchase some Sani-Flush crystals and grab a plastic container for the brewing process.
First and foremost, read the safety precautions ❗ Second, grab some rubber Mittens 😆
This has been a much Quicker and more Thorough process for the smaller percentage of perfectionists in the Hobby. I do not recommend you do this indoors, although it is designed for the hosehold toilet bowl cleaning. It is best to use outdoors and DO NOT breath the fumes released from this process. The instructions will reveal the chemical which is obviously acid!
Experiment with a small amount and don’t waste the crystals on a small part in a big bucket. If you put too much Sani in the broth it will eat eat away at delicate components so work your way up in the concentration levels. Grab yourself a brass bristled wire brush for the nooks and crannies and stay away from wire brushes unless they are used and on the way to the trash 😛 When you are done with the Witch’s brew you may flush it down the Drain.
Remember Boys and Girls to Play Safe!
Rob Martel