Metalex performs knife bright hardening. It is one of our foremost specialties. As a result, we have expertise with many different types of knife steels and blade shapes and sizes. We recently performed heat treating for Kopis Designs. They are a custom knife maker in Colorado. Making knives with great craftmanship and high quality steel. We were able to heat treat these to 61 HRC using our proprietary setup in our vacuum furnace. As a result the knives come out super clean with no distortion or warping. Head over to Kopis Designs and see all of their great designs.