knife river flint

[juniper junkie]

so, what is a good temp to heat treat this at? how long?

[arappaho]

Well Jim, I guess we're just going to have to go and get some ourselves.
I love North Dakota. Wonder if it's changed much in the last 30 years.

JJ, Good quality Knife River doesn't necessarily have to be heat treated, but here's
one link to a site with cooking recipes. I'm sure there are others.

http://orerockon.com/Heat_treating.htm

[juniper junkie]

I finally got around to making some points. takes some getting used to but flakes nicely. I make this 6" bi-face last night. you can see the fossils in the material, these sometimes inhibit the flake. it makes a tough sharp blade. the blade is 1/2" thick.

[knappingprodigy]

Knife River works great using a hammerstone or antler.  Heat treatment is very tricky with this material and I think makes the rock work worse.  I used to knapp with copper tools and found KR difficult to work but since switching to abo, I've realized that abo tools just eat raw rock for dinner!.  In my opinion, abo tools are superior to copper for that reason and many others.

Recomendations:       

Work Knife River raw
Try using an antler billet or punch but make sure your platforms are smaller and sharper than for copper

[mullet]

 JW, let me dig through my pile of Debitage. It wouldn't hurt to have an extra Kidney laying around, just in case.