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Jul 28, 2014 13:54:25 GMT
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Just wondered if anyone has used this method before for removing rust from items  Seen the baths of vinegar etc etc but wondered how a simple bath with baking soda cathode and annode would work using a battery and battery charger Going to give it a go bit want to hear if its worthwhile or not ?? Cheers peeps |
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tom13
Part of things
Posts: 571
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Jul 28, 2014 14:46:01 GMT
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Look at Hammy's thread on mx5nutz in the readers rides and I think there is a thread on here too in readers rides. His has good pictures and advice on.
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Jul 28, 2014 14:53:25 GMT
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Jul 28, 2014 15:00:56 GMT
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Sorry was having a blonde moment when I said baking soda haha And cheers for the links will have a nose in minute Already have my tub and solution am using an old brake disc too as annode Will give it a bash and post my results  Anyway sure baking soda will still work won't it ? |
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matty2300
South East
Red ones go faster!
Posts: 157
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Jul 28, 2014 15:41:04 GMT
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Anyway sure baking soda will still work won't it ? should do, only one sodium atom different... though washing soda is a fair bit more alkaline than baking soda so it might not work as well? |
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2002 Saab 93 - Daily
1972 Vauxhall Firenza Sport SL - in storage
1978 Vauxhall Magnum - PROJECT
1993 Vauxhall Cavalier 2.0 GLS - DEAD
1994 Vauxhall Astra 1.4 LS - DEAD
1999 Saab 93 2.0 SE - DEAD
1999 Mercedes W202/C200 - DEAD
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Jul 28, 2014 16:02:42 GMT
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Cheers Matty thought as much but always nice to check lol
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Jul 30, 2014 21:42:08 GMT
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I've just been playing about with this, just to see how it worked, polo rear axle mount, (on the left as removed from the car,on the right with the heavy rust removed with a needle scaler)  using a 13.8v 10amp bench power supply (instead of battery charger)  and this shows the finished result (half needle scaled and half after rust removal)  |
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Jul 30, 2014 22:07:12 GMT
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Nice one optima looks ok that mate |
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I've used this quite extensively, with varying degrees of success. With a decent anode it's easy to get some good results, I would imagine a bench power supply is probably better. One note was to ensure that your battery charger isn't too clever and limits the current if it cannot sense what load the battery needs - one way around this is to put a dead battery in parallel with the workpiece and anode so as to provide a load for the charger.
It's a nice cheap way of cleaning rust off, sometimes have to be quite patient but washing soda is much cheaper than vinegar and doesn't stink so much. I tried using vinegar and it made virtually no difference to the workpiece. I've also tried milkstone remover (which is basically phosphoric acid) with some good results.
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Friend of mine did it here: www.saabsforum.com/viewtopic.php?f=5&t=266 He 'tanked' an oil cooler housing from my Saab 900 for me, just to see. It was well rusty before it went in and was just a bit mottled looking when it came out. So it works. I think it basically cuts the job down by 3/4. To get the products from the tank to a condition where you're ready to paint takes some wire brushing or ideally sandblasting but the tank is a great shortcut. Can also dip something like an engine block and that would clean the rust out of the coolant passageways which you wouldn't be able to do with normal abrasive tools. So yes, hooray for the tank! |
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