Citric acid bath
I clean the hardware with acetone then put it in a citric acid solution (1 Cup to a gallon of water).
For a container I picked up one of those cheap plastic storage totes at an after charismas clearance sale. let sit 24 hours take them out then a couple of seconds with a wire wheel. It wont fix any pits but it'll shine like new. I've done an entire Brinly plow, an 1890 Oliver plow, & all of the rusty parts on my 127 this way.
Citric acid is the stuff in Catsup & Coke that cleans rust. Any way you can buy in on amazon or eBay (its the same stuff that goes into your wife's bath bombs) I like to dissolve it in hot water (gallon or so) and add the rest of the water. it non GMO, gluten free and most importantly non toxic. it doesn't off-gas like electrolysis and doesn't require special handling or special disposal.
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