Technical & Reference Section > Tech and Restoration

metalurgist's amongst us? Blueing

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easyroller:
     Hi there been reading a bit on here about "rawing" or stripping back frames etc.        Now what i am wondering is ,when you look at the chain/seat stays on a metal rebel contender raw you see how dark and burnt it is, i would like to acheive this for the whole frame.          I have read a good deal about the "blueing" process which gunsmiths use to get that fantastic black/blue color whilst keeping it raw, this is similar to the  baking processs, but i have read that it is possible to do it using a butane burner and paying close attention to the "hue" changing process so as not to "overburn" it,  then cool it in oil, as air cooling happens to fast which causes weaknesses in the metal due to shrinking.        Gunsmiths used this process with 4140  to keep rifle barrels straight and true as well as dent and knock resistant, ok sorry for the long winded explaination,has anybody here attempted this and if so all info is appreciated, thanks. :)

harris:
i think it has alot to do with the properties in the metal/covering
such as stainless steel blues as its heated.most others just grey a tad.

harris:
you could copper a frame and let it dull then lightly buff it up.

easyroller:

--- Quote from: harris on July 21, 2007, 12:11 PM ---you could copper a frame and let it dull then lightly buff it up.

--- End quote ---
Thanks for looking and to be honest "coppering " is a vague term i have heard of here and there, do you mind walkin' me through it?

harris:
your best bet would be to go to a platters and ask what can be done,
i have nickel midschool frame that has gone a well nice colour goldie blue

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