Case hardening colors

[Frank Niro]

I would like to produce some case hardening colors on some bolsters. Seems to me i remember something about bone meal being used but just a comment. I'm not looking for information on case hardening. I'm familiar with this. Thanks.
Frank

 

[Bill DeShivs]

Bone meal, charcoal, leather pieces.

 

[jdm61]

Fram what I understand, for your application, you can just use a torch and play with the colors unless you are actually looking to case harden the bolsters.

 

[Matt River]

Here is a link to a very extensive discussion of color case hardening, very nice setups, pipe crucibles common with mechanisms to drop straight into quench. http://www.marlin-collectors.com/forum/viewtopic.php?t=3732&start=195

 

[Matt River]

Bone to carbon ratio effects colors, sheilds and other devices being used to try and control color formation etc. Particle size of materials used can also effect patterns, sort of like copper patina with ammonia and wood, shape of wood effects patterns, stringy bark way different than fine sawdust or chips.

 

[Daniel Fairly Knives]

Does the quench from case hardening have a lot to do with the colors?

 

[Frank Niro]

Thanks to all of you.
Frank

 

[javand]

Hey Frank, I'll email you, this is something I'm working on also.