Boiler tube beading and expanding tool.
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Previously:
https://www.homemadetools.net/forum/...321#post177170
https://www.homemadetools.net/forum/...819#post171185
https://www.homemadetools.net/forum/...548#post158900
https://www.homemadetools.net/forum/...445#post154762
https://www.homemadetools.net/forum/...821#post148364