Jim i don't think you have to go that high in heat to get it to work . When i worked as a tool and die maker many years ago, we coated our stuff with oil and baked it at 350 degs for around 2 hours. Some of my tools i made still have the coating on them in good shape . I remember a old fellow useing a Act/Oxy torch to heat his and it looked as good as baking it . I guess i could try it again with some lard and let you know !