In Reply to: Buford posted by Jim on November 27, 2018 at 21:51:47:
Electrolysis with washing powder will remove rust.
Electrolysis with lye will remove rust and grease.
I am using a 2/40/200 battery charger. Set on the 40 anp scale and try to keep it around 25 amps positioning the anodes at variable distance.
I currently have a 50 gallon plastic barrel set up with lye.
I have a 250 gallon water tank with metal sides that I should set up with washing powder for larger items. Wheels come into mind.
Washing powder, I believe, is a basis for fertilizer. Spilling that in the yard is not a big mess as lye.
I have had a lye spill. Not pretty.
Muriatic acid works well and can be neutralized with baking soda. Muriatic acid is also prone to flash rust when rinsing off the item.
I have a 5 gallon bucket of that around here also. . .
Phospho will convert rust to a paintable surface. If the rust is raised up, it needs to be removed somehow prior to painting.