How seamless rolled rings are made. 5:05 video.
https://www.youtube.com/watch?v=TEvwVVSsd74
Previously:
https://www.homemadetools.net/forum/...349#post146393
https://www.homemadetools.net/forum/...931#post167906
https://www.homemadetools.net/forum/...027#post164586
https://www.homemadetools.net/forum/...978#post137684
https://www.homemadetools.net/forum/...3456#post99140
