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Reply by MedicKen

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Posted on Reconditioning hand planes

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MedicKen

1615 posts in 4071 days


#1 posted 08-25-2009 02:40 PM

The best method I have found for rust removal is by using electrolysis. You will need a plastic container large enough for the piece being cleaned to be suspended and submerged, a 12V battery charger, and Arm & Hammer Washing Soda(calcium carbonate). The soda is a little difficult to find sometimes. You will also need a metal rod or 2 to be a sacrificial anode.

Suspend the part in the bucket, use wire, bare copper I have found works well. Mix the washing soda to about 1 tablespoon/gallon of water. Place the sacrificial anode in the solution as well but NOT touching the part to be cleaned and clamp it to the sides of the bucket. It is better to have multiple anodes as the process only works by “line of sight”. Attach the battery charger. Very important here, if you get this wrong it wont work and you will add rust to the part being cleaned. The POS cable gets connected to the anode and NEG to the part being cleaned. Plug in the charger and go have a beer, wait a few hours, its a slow process. It will usually take 12-24 hrs to complete depending on how much rust there is to remove. Once you start the process within a few minutes you will see small bubbles appear in the solution. The chemical reaction has begun.

When all of the rust has been removed the reaction will stop by its self. Its kinda cool. There may be a black film on the parts which is normal. A good stiff wire brush works well at removing it. Just a side note, DO NOT use stainless steel as the anode material, it will create a toxic solution in the chemical reaction. Rebar works well, is cheap and readily available.

Evaporust, which has been mentioned here, works well but is expensive. I have used it and the parts come out clean but are etched. The parts are even sticky and just dont look right. The elevtrolysis leaves the “patina” and will even remove paint if left in long enough.

Good luck and if ya need any more info send me a PM.

The video is not mine and I am not endorsing it in anyway. I found it as a reference to help guide.

-- My job is to give my kids things to discuss with their [email protected]


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