Thanks, mates. Tony, yes, I go through a bit of a heat treatment. I like to normalize the blade a couple of times (heat it to red and let it cool to black then back in for another cycle or two...doesn't take long). This relieves stresses built up from working the steel. Then I warm up some canola oil and carefully heat the blade up to critical (non magnetic) and quench it. I actually do this a couple of times too, especially with 5160 and 52100. Then I stick it in a tempering oven for a couple of one hour cycles at about 425 degrees Fahrenheit. Hope that makes sense.