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In Reply to: Polishing alumium chassis posted by airtime on March 16, 2007 at 08:55:02:
Grins
Follow Ups:
I had a '57 Caddy Eldorado that had aluminum bumper ends that were chromed and I had to get them re-plated and they had to I believe nickel plate, then copper plate and then chrome them...
as are most USA auto badges and moldings from that era
You can chrome pot metal, anodise it, even paint it; its non-magnetic just like aluminum, and pot metal can even be a mixture of Zinc and Aluminum
Looks v. v. similar to aluminum and is about the same weight by volume because this stuff is porous under its diecast skin
You're a Empire turntable owner; take a look at the plinth and triangular belt cover on a 698
Looks like Aluminum doesn't it? But it isn't, it's pot metal; and I'll stick to my guns, aluminum can be anodised and painted, but 100% unalloyed aluminum will dissolve in a chrome bathGrins
Not true. The process is tedious. Immerse thoroughly cleaned Aluminum in a saturated solution of Zinc sulfate, whose pH has been lowered by the addition of a SMALL amount sulfuric acid. A layer of metallic Zn plates out on the Al. The surface is now workable. Lay down a layer of Copper. Lay down a layer of Nickel. Lay down the Chromium layer. However, I have reservations. Al is very reactive and will be consumed before Chromium, if electrochemical corrosion activity starts.A more practical use of the ZnSO4 "dodge" is to make solder pads on Al.
Eli D.
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