I look at some of the knives at the blade show and see the treat line which is as straight as an arrow and then some are not. When I heat treat a carbon blade i was taught to just heat the edge until it turns a dull to cherry red and then quench. So the procedure that I use is to put a torch with a rose bud in a vise upside down and use a set of tongs on the handle end and just pass the knife edge back and forth through the flame until the color shows and then quench in oil.
This gives a line which will kind of follow the knife edge and varies a little from tip to ricasso. I don't use any refractory cement or anything. So I would greatly appreciate if all those straight liners would fess up and tell us their secrets. Thanks
Claude
This gives a line which will kind of follow the knife edge and varies a little from tip to ricasso. I don't use any refractory cement or anything. So I would greatly appreciate if all those straight liners would fess up and tell us their secrets. Thanks
Claude
