I'm not sure where I found this but I thought that I should share it. with the rest of you.
http://www.metacafe.com/watch/456478/rust_removal_tip/
I mixed some up just like he tells you to. I did use a bigger charger just because that is what I have. I works great. I've used it one several things: Heater hose pipes, Metal brackets, Have and exhaust mani fold in there right now. Man that is some awesome stuff. I does all the work for you. Mix it up Turn it on and let it Sit. Come back hours later and that is one black part. Wipe it all off and What is that I see Metal not rust! Kinda makes me scratch my head but hey it works.
Thats great... I'll have to try that!!
Thanks..
Thats amazing might have to try it soon.
you can just use vinegar and without the battery charger :P
http://www.cookhaus.co.uk/vinegar/index.htm
I'm doing this right now....leaves a lot of black stuff on it.