I am new to forging but made knives via stock removal back in my twenties. I built a Forge over the winter and plan to boost retirement with a few hand forged knives here and there. My first customer who happens to be a friend wants a Bushcraft knife but wants it case hardened. He has a thing for the case hardened look and I have to admit being a "Cowboy" myself I do also. My question is can you case harden a high carbon steel like 1075 to achieve the color he's looking for? I say 1075 because thats what I have on hand and have used mostly. Would it be less durable as a knife? I have never case hardened anything. I know they make case harden coloring treatments you can apply but he really doesnt like that idea.