The Power of Apple Cider Vinegar for Rust Removal
What you want to use is washing soda (sodium carbonate) not baking soda (sodium bicarbonate) that is what I use and what is recommended by the specialist that do the restorations.
edit you need to use a battery charger, small current 10 amps and a piece of metal for catalyst, I use a old rotor.
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Just got done studying this method using a battery charger and a anode for removing the rust. Found it very interesting.
Something else I found interesting is that the soda ash that you use with the electricity to remove the rust. You can use the soda ash or baking soda to neutralize the vinegar. So
I found that a little over one cup of soda ash should neutralize 14 quarts of white vinegar.
One cup of baking soda should neutralize 7 quarts of white vinegar.
I used 16 quarts of apple vinegar in my dunk barrel. In my neutralizing Barrel I used approximately two cups of soda ash. Each tank has approximately 40 to 45 gallons of water in it.
So my ratios between the apple vinegar which is twice as strong as the white vinegar and my soda ash which is twice as strong as the baking soda came out fairly close for just a shot in the dark kind of experiment.
But I'm really impressed with how clean that first block came out. And tomorrow I will pull out the second block and see how it's doing. It was a barn fine that cost me a small fortune.
Speaking of cost, I have about $16 in apple vinegar, .50 in table sale an $8.00 in soda ash(which is way more than I used). Total $24.50 in supplies and it has the second block in being cleaned.
I have 2 more blocks I want to do to see how strong the solution is.
