Local Amish blacksmith here in KY I know, recently showed me some of his newest creations, one was a hawk fom railroad car spring, osage handle, wow was this neat. He had some nice hunters, 4-6 " blades with nice quench lines about 3/8 on them. He had a deep long pan, with a flat bar of steel in the bottom, covered in lard about 1/2 inch or so. He stated that he started at the tip and rolled it down the blade on the bar, and left it there till cool, similar to a samurai sword being quenched to pull the tip in a curve. Looked great, just wondering.