I need some help. I thought I'd try making a blade, so I took a file of suitable size and started working on it (the file) very slowly. I would grind for a few seconds until it started getting hot to the touch, then let it cool, over and over and over. Finally after exibiting alot more patience than I am known for, it was close to finished. I held it at arms length and inspected it and was pleased, the lines were good, choil was good, good shape and weight. As I was putting the finishing touches on it the un-thinkable happened. THAT ROTTEN SOB BROKE SMOOTH IN HALF !!!!!!!!!! So I guess the question is did I use the wrong steel or wrong technique?