Greg G. said:

Has anyone tried something like this for holding segments tightly
together for glue-ups? I use a band clamp now, but was just thinkin'.
snip

Thanks, everyone, for the suggestions.
I use strap/band clamps now, but had a moment of idle time to ponder
other possibilities. I'm with Kurt Vonnegut on this one - consider
your options.

It only took a few minutes to create the CAD drawing.
Yes, knobs would have been included - I just didn't feel he need to
draw them, (Dawr them - for you Bostonians.)

Tightening all those screws is a bit much - but servo mechs, although
interesting from an engineering standpoint, are not practical.
Pneumatic clamps, however... Hmm...

Gadgeteer? Absolutely. It's my reason for living... g
Just Another Gadgeteer? Never! Reinventing the wheel?
Nah, just searching for another way to do something more efficiently.

I think this particular project is not practical, but after gluing up
a few more rings last night, I think I've got another bonehead idea...

FWIW,

Greg G.