Machining a multi-start thread by Beyond the press. 10:50 video.
https://www.youtube.com/watch?v=QlI9J0Whp-s
Previously:
https://www.homemadetools.net/forum/...889#post164060
https://www.homemadetools.net/forum/...161#post141528
https://www.homemadetools.net/forum/...807#post137019
https://www.homemadetools.net/forum/...984#post149050
https://www.homemadetools.net/forum/...867#post152552
https://www.homemadetools.net/forum/...210#post169082
