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View Full Version : How do you make steel change colors?


panhandle_redneck
05-08-2012, 08:44 PM
I had an ax head that I wanted to do the rainbow effect on. I cleaned, sharpened, and heated with a weed burner. Quenched in motor oil. It came out great but a uniform black.

How do you get the ripple multi color effect?

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Walker
05-08-2012, 10:32 PM
Sandblast or flapwheel ALL of the burned oil off, until you have a nice, shiny, uniform surface. Then take a torch and start heating the piece, staying away from the thin surfaces and concentrating on the thicker sections, keeping the torch moving. You will start to see straw/brown colors come into it. Pll the torch away at this point and see what colors develop, add more heat sparingly until you get the colors you want. I suspect, though, that the coloring that you are refering to comes from color case hardening, which comes from heating in an oven with bone/carbon based materials, for a certain time/temp, then quenching.

H80N
05-09-2012, 08:29 PM
Neat site....:D

really well illustrated....

http://www.homemodelenginemachinist.com/index.php?topic=5169.0

:)

panhandle_redneck
05-09-2012, 08:38 PM
I guess I didn't know what I was trying to do. Color case hardening is apparently what I wanted to accomplish I guess. I thought it was all am oil dipping process. Thanks.

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