Massive pilger mill crankshaft.
https://diqn32j8nouaz.cloudfront.net...pper_plant.jpg
Previously:
https://www.homemadetools.net/forum/...0885#post73315
https://www.homemadetools.net/forum/...1800#post94762
https://www.homemadetools.net/forum/...175#post130455
https://www.homemadetools.net/forum/...571#post123106
