Differential tempering material?

I

Ijfleming

Joined
Feb 13, 2007
Messages
78
Hey all! It's been a while since I had the opportunity to post on here... Kitchen bitchery has been keeping me busy. However, things are slowing down enough that I shall soon be making my first knife, and I would like to differentially heat treat it.

I've watched Wally Hayes' Home Workshop Knifemaking video, and he recommended 2300ºF refractory cement, which I cannot seem to get my hands on in my area. So I have basically 2 questions for you guys:
1) DOes it absolutely have to be 2300º? I can get 2100º at best, will a slightly thicker coat compensate for the difference?

2) What other materials do you use to differentially heat treat blades?

Thanks for your time! I'll be posting pics of my knife when I make it!
 
I use plain old furnace cement that you can get at your local home hardware store it works just fine.

Bob
 
You can use Satanite found at http://www.elliscustomknifeworks.com/ There's also APG #36 which the late Mr. Engnath used for hamons and stuff like that. Look under Refractory Coatings.

You can use a forge or whatever to get the blade red hot coated with satanite or APG on the areas you don't want as hard as the leading edge.
 
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