I've been using simple carbon steels so far and always normalized them several times before quench to refine the grain structure. Now I'm going to get some S5, D2 and 440C. I will be making a few blades by stock removal. I'm not sure if those steels are supposed to be normalized before quench as well. Especially D2 since it's an air hardening steel. Should I still bother with normalizing or is it not really necessary? I'll only have a basic forge to heat the blades and do the tempering in a kitchen oven.