The world's largest paper mill Yankee dryer is this 24-foot diameter behemoth located in Poels, Austria.
https://diqn32j8nouaz.cloudfront.net...r_cylinder.jpg
Previously:
https://www.homemadetools.net/forum/...919#post129443
https://www.homemadetools.net/forum/...697#post151932
https://www.homemadetools.net/forum/...814#post144138
https://www.homemadetools.net/forum/...736#post136851
