Similar rusults can be achieved by using a jell type, phosphoric acid based rust remover. (Naval Jelly). After degreasing, you just paint it on the tubes and let it work for ten minutes. Then you can rinse and brush it off with running water. When using it as the initial stage of barrel prep, I scrub with a green pad for complete bluing removal.

I don't do this any more, I prefer the electrolysis tank.

Last edited by Ken61; 09/21/17 08:39 AM.
I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.