steel hardening technique which is not taught in school. Make a sharp spiral TAP

#lathe #creative #tools steel hardening technique which is not taught in school. Make a sharp spiral TAP Warning: This screw tap is only used to clean and repair dirty and deformed nuts, not intended for very hard dead iron. I made this diy left screw hand tap to make nuts on spare parts for tie rods on trucks, which often experience damage to the nuts, so I made a DIY hand tap to speed up repairs and for the hand tap I did hardening to make it stronger and more in this technique I use salt water as a cooling medium, hardening the steel. Creative idea Making tools Lathe technique Welding welding for beginner making barrel rifling Steel hardener Making lathe knife sharpening Gear CEE AUSTRALIA Thank you for visiting, don't forget to like and subscribe for support, thank you