Anyone with experience heat treating 1080 blades in a kiln? How bad is the decarb if you do it without foil? How do you get the foil off and the knife in the oil fast enough if you only heat to 1450? The first one I tried I used a packet, but it was too cool by the time I finally got it into the oil. The second time I tried that blade bare and it worked well. Hit it with a file and it didn't seem to cut at all.