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Posted by chris case on Thursday, July 10, 2008 at 16:10:43 :
In Reply to: chrysler bumpers posted by greg on Thursday, July 10, 2008 at 09:58:41 :
First they used polished dies to stamp the part in. The hand polish the part until it come to a mirror finish. Then copper plate, then nickel , finally a layer of chrome. Only seconds to minutes in each plating bath, but much had work in the polishing and cleaning before each bath.
Modern brush aluminum- stamp out the part, use an abrasive brush to make it evenly satin. Done.