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72" Round table support structure3/17
I'm making a 72" round table with a tapered square center column out of solid cherry. The top is 1-3/4" thick and probably weighs 220# on it's own. I'm trying to come up with the best way to build a support structure that will be effective in helping keep the top flat across the grain (but still allowed to move) and also be an effective support all-around. I've attached my main ideas.
Any advice is appreciated.
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I don't think any of them have a large enough foot print on the floor. The top will remain flat across the grain as long as you buy quality stock. Quarter sawn stock helps.
Andy, When I build big thick tops, I glue up two halves, then flatten those surfaces.
I then make the mating parts to whatever proportions I need to support and connect to the base.
Before gluing the final mid seam, I oil and wax the T rail- braces, to keep from gluing them in the slot. Also make sure that the slots are longer than the rails, to prevent causing the top to slit, if it should shrink more that expected.
One screw near the center, will keep it centered while allowing the sides to move in and out freely without cupping.