Typically[sp] the chrome process starts with a few thousandths[.003-.007]of copper,then a couple thou[.002-.003] of nickel,then .001-.002 thou of chrome.It varies from shop to shop.Browns Plating out of Kentucky is probably the best known to us bikers.....so you are probably right Mark.I did not know of the jeweler rouge angle in the Simichrome N.,thanks....and yes,it works good on soft metals like aluminum also....I dont know anything about acids anymore.....goog luck,Bob
