Here is my attempt at heat treating and tempering. I used motor oil(used) for quenchant, and charcoal briquetes for fuel. A metal oil pan for the furnace, and I picked up some 1/4" black iron pipe and fittings for the blower, oh I drilled hole along the length of the pipe. I know the blade has uneven heat in it, I got impatient and didn't let the coals bank down long enough, and I had the air a little low. When the blade came out of the quench, it was BLACK!! Well I sanded off all the black so I could put it in the oven to temper (I was at my brothers house, I read that if you quench in motor oil, it'll stink up the house when you put it in the oven). It came out of the oven a nice straw color, as recommended. I will be finishing the knife next weekend, I ordered some spacer material and some mosaic pins (thanks Nitrox!), and I have decided to use some of the black locust I have for the scales. As promised, when finished, I will take it out and give it a thorough test, I will post the results.