Luke, I just read this, as much hand work as you are doing I would not heat treat until the knife is finished down to 220, I know I am going to be called on this, I was taught to wrought grind and heat treat but gave it up a long time ago I take all my knives to 220 before heat treat and hand finish from there with tool and die maker stones to 600 from there with sand paper to 2000 or what ever grit you want to stop at, if the blade warps straighten it on the first drawback, this works for me, Deane