I can tell everyone how to do this wrong. When I first made this cover for the center of a fire pit table, I made a rookie mistake. After steam bending a 1.5" tall curved circular piece that is the base for the cypress circle cover, I glued the two pieces together along the entire circumference. Somehow forgot that wood moves. It's been my mantra since.
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No great surprise, in Florida with 90+ degree heat and 200% humidity, it wasn't too long until the cover turned into a warped pizza.
Now, three years later, parts of this have developed rot, and I've taken the piece apart, removed the rot, and am refinishing it now.
My question is, what is the correct way to connect the bottom rim to the round top. Only on two edges? I also now have the rim in 4 pieces (roughly 90 degrees of the circumference each), so they will need to be attached separated.
I can't think how this can be done with something like a breadboard, so what are my options so it doesn't just warp badly again?