So its been floating around that a Wonderedge is simple a Cryo'd goldedge. And we all know that Friodur's are cryo'd. I bet the Dovo stainlesses' EISHARTNUNG (ice hardened) is cryo as well. So if I take one of my blades and let it sit a few hours in liquid nitrogen, will the same effect happen? Or does the tempering have to be doen right after forging? Does it matter whether the blade is carbon or stainless (I know they're differnt, but does cryo treating have positive effects on both?)? I know the basic idea is tranforming Austensite into Martinsite and causing the precipitation of carbides, I'm just wondering if there's a really in depth process, or if it is quite simple if you have the tools. I do in fact have liquid nitrogen available to me this weekend, so if in theory it is possible, I would like to try. I have a standard oven for heating to a controlled temp around 500 deg F, and would be willing to try heating in a cast iron furnace if more temp is needed.