I'm trying to heat treat 3 knives out of 1095 and I'm having issues with it. I have a propane forge with 2 burners. I have no issues getting the steel up to temp. I do not have anything to monitor the exact temperature so I've just been going to non magnetic and then quenching in canola oil, heated to 135 degrees. When I take the knife out, I test it by scraping it with a file and the file always digs in. I have looked up videos, looked on message boards and I am doing exactly the same thing as everyone else (and in many cases the exact same setup) and the steel is not getting any harder. Does anyone know what I might be doing wrong? I'm so close to throwing in the towel and sending it off to get heat treated. Thanks for your help.