Machining bottle molds in the 1930s.
https://diqn32j8nouaz.cloudfront.net...s_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...195#post103566
https://www.homemadetools.net/forum/...953#post171668
https://www.homemadetools.net/forum/...004#post171891
https://www.homemadetools.net/forum/...793#post118983
