[PSUBS-MAILIST] Distortion when cutting in shell

[André Eriksen via Personal_Submersibles]

Hi all,

When you cut out the hole for the conningtower, is distortion of the shell
an issue?

My shell is 12mm in thickness. Wondering if I should place a reinforcement
ring on either side of the hole to be cut -Not welding them so I can remove
them after I have tacked the tower in place.


Thanks
André
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