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#1
03-07-2008, 10:59 AM
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What is that rainbowy finish used on antique guns?
Looks like heat applied to chemical of course. If applied right, it is really cool. Being a founder, I have a lot of chems used in patina of bronze.
Also what is the stain or patina used to antique the cut and backgounds on stainless engravings? Thanks, Jack 
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#2
03-07-2008, 06:33 PM
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Re: What is that rainbowy finish used on antique guns?
Jack
I believe that you are refering to color case harding, thier are several different methods to do this I would check google for more info 
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#3
03-08-2008, 09:17 PM
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Re: What is that rainbowy finish used on antique guns?
Yes, as Dave said, color case hardening. It is a difficult and tedious thing, not a finish really. It is made by heating the metal in a special atmosphere with carbon in contact with the surface and then by dunking it into a bath of bubbling water typically. The reason for it is to apply a hard outer layer for wear protection, the beautiful colors are a secondary thing.
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