tundratrekers@mtaonline.n
Elite Cafe Member
I have seen many posts saying that you do damage to HSS gravers if you see colors running during sharpening.Thats just FALSE info! The tempering of high speed steel is in the range of the hardening temps. for carbon steels.You can get HSS into the red range when viewing in the dark without ruining the temper. What will ruin it is to get it hot during sharpening,and then cool it with water.That will lead to the graver becoming brittle.If you get it hot,let it cool in still air.You can use water,but only to keep it from getting hot,not after it becomes hot.Temper brittleness happens approx. between 400-700 deg.fehr.,if quenched in this range. God Bless,mike