interesting way of 'cutting' a thread, what tool did you use, as it was a lot quicker than the 60 degree profile hardened lathe tool that I was expecting upon hearing to cut a thread; this tool looks like you "rolled" the thread.
Thanks for watching ☺️ This tool is rolling die by YAMAWA Company. Someone ask that then I made a movie. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yKthPYEKmPo.html