Swaging copper pipe.
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Previously:
https://www.homemadetools.net/forum/...008#post184006
https://www.homemadetools.net/forum/...294#post196210
https://www.homemadetools.net/forum/...868#post190806
https://www.homemadetools.net/forum/...418#post150880
https://www.homemadetools.net/forum/...592#post170390
