Here's something you can try, as long as there's some color left. Wipe the tubes down well with acetone. Quickly apply a coating of white vinegar. You want to coat quickly so the etch is even. In ten or fifteen seconds, quickly go over the tubes with a rag sopping wet with baking powder solution. This neutralizes the vinegar. Rinse well with water. If possible, soak the tubes for several minutes in hot tap water. Dry with a towel, then blow the ribs and bores dry. You'll probably have a little flash rust, so go over the tubes with OOOO degreased steel wool. If you like the pattern, lacquer them with clear gloss nail polish cut 50/50 with acetone. This only works if color remains, not on areas that have been silvered.
Regards
Ken
Last edited by Ken61; 05/01/17 07:38 AM.
