Glad to hear you guys are feeling some fire too...
Slowworm,
. On the heat treating....oops, I missed that.
So, with the first blade, I quenched it in pre-warmed canola oil and tempered it. I noticed a slight warp, which I tried to straighten. Bad idea.... However, it did give me a glimpse into the structure of the grain. I didn't like how coarse it was. This isn't any kind of fine steel, but I knew it could be better. I used that first blade (which I broke) to do a series of tests. I finally discovered that I got the finest grain structure with a brine quench rather than oil. So that's what I did with the second blade. The last two pics above are the blade after the heat treat. Below is a pic of the blade just before quenching. The Japanese coat their blades with clay before quenching in water. It makes for a more even cooling by preventing air bubbles from forming on the steel during the quench. I'm just playing around with all of this. Of course, a quality blade can be made much more simply.