I was visiting the Smoky Mountain Knifeworks On Sevierville, TN. They have (or had) a resident Knifemaker available to help you make your own knife from either a horseshoe or a RR spike. I chose to make on from a RR spike. After heating and beating the basic shape, before going inside to grind it, the knifemaker sprinkled some powder, looked like powdered graphite on the blade and heated it once more and then quenched it. I have tried to contact him (James "Cody" Weaver, King James Knives) but he has dropped off the map. Can anyone tell me what that powder might have been? Was it supposed to increase the carbon on the surface of the blade maybe?