ive recently started using A2, better yet tried using.. Ive heat treated 5 different knife blanks that I made from stock removal and every one had an insanely nasty warp in it.. the first 3 were beveled to a .02” edge and plate quenched, the 4th and 5th were just profiled, 4 was plate quenched and 5 was quenched in still air in garage at 40 degrees ambient. Heat treat was in oven foil wrapped at 1225 for 5 minutes, 1400 for 5 minutes, 1750 for 35 minutes then quench.
I’ve asked some friends for input and from what we’ve gathered is that maybe the steel was shear cut and causing my issue of a bad warp? I’m talking an 8” knife and in the middle would be over a 1/16” gap when I lay it on glass.. the picture below is of a blank that was half warp corrected during a temper.. any help is appreciated as to why all my A2 is warping!
I’ve asked some friends for input and from what we’ve gathered is that maybe the steel was shear cut and causing my issue of a bad warp? I’m talking an 8” knife and in the middle would be over a 1/16” gap when I lay it on glass.. the picture below is of a blank that was half warp corrected during a temper.. any help is appreciated as to why all my A2 is warping!