The soul of the blade is born in the crucible of the furnace. Once you own a Paragon knifemaking furnace, you can begin experimenting with heat treating ideas whenever you desire. Stay up late to heat treat an exciting blade design just in time for a special award ceremony or gift presentation. Paragon knife making furnaces are made in America by skilled craftsmen. 45% of our factory work force has been here over 10 years; 20% have worked here over 20 years. The knifemaking furnace manual includes instructions for heat treating D-2, 440C, ATS 34, 154 CM, O-1, and A-2 high carbon steels. Before buying a furnace, ask your knifemaking friends for a recommendation. Chances are they own Paragon furnaces themselves.