Yeah it should be on this forum I saw it a while back.......I think the biggest reason they stopped doing it was because of how difficult it was to do. There needed to be a lot of parts for just a few finished pieces to be made...thus it economically it wasnt sound to do it anymore. Who would anno a 100 markers just get 10 that were right?
When you strip chrome/nickel you run alot of current through the part and hang it in a strong (relatively) electrolyte. For some reason, when the nickel is removed it leaves a rainbowish hue on the service of the aluminum. The hue polishes/strips off just fine.