This summer project for me is to make a stone knife like the one Tommy Lee Jones made in "the hunted"... I was reading US Army survival manual and pages 4-3 to 4-5 have references on how to make a knife. They seem to go in depth on wooden (fire hardening), bone, stone and metal (if you have it) designs. Since I don't want to get ETS in trouble by posting pictures of the pages from copyrighted book email me and I will try to send you the pics.