Manufacturing gas cylinders. 10:24 video.
https://www.youtube.com/watch?v=GMZKE0H_Ol8
Previously:
https://www.homemadetools.net/forum/...568#post117613
https://www.homemadetools.net/forum/...738#post143788
https://www.homemadetools.net/forum/...396#post142544
https://www.homemadetools.net/forum/...608#post139591
https://www.homemadetools.net/forum/...855#post152521
https://www.homemadetools.net/forum/...504#post151252
