Knife making. How to make a knife.

In this video I’ll show you how to make a knife out of an old file. My choice old file to make diy knife. First of all, in the fire we need to release the steel, that is, heat it to a high temperature. Steel tempering is a stage of heat treatment and is used to reduce excessive rigidity, reduce brittleness and eliminate internal stresses in the metal. After heat treatment, it is easier to process the , steel products are tempered at temperatures that are several times lower than the quenching temperature, while maintaining the martensitic structure that ensures the hardness of the metal. This heat treatment is mainly applied to cutting tools and other tool steel products. Then I cut out the contour of the knife with a grinder. I remove all the bumps, I use a belt sander, I use a wet stone grinder manufacture of the handle of the knife I cover with oil wax from Osmo. This video is not a guide and does not call for making a knife. This knife was made for filming a video, after t