Like has been said before. The apropriate quenchant will be determined by the speicific steel used in the blade, as well as the type of blade and its intended use. The heat treat on a long blade like a sword will be much different than that of a knife as Steve touched on. You most certanily do not want a sword as hard as a knife as it will surely fail under the stresses of its usage. A bit more info on what type of steel you are using and the type/size of the blade would make it a bit easier to give you a better answer.
I notice that you are from Colorado Springs, I am as well, if you are serious about things, drop me an email (can get it off my website) or a pm and I might be able to show you a few things.
Graham
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