I am building a slab table from a 14′ x 54″ x 3″ redwood slab. It’s yet to be cut, but the top will likely be 44″ x 72″. After considering numerous base options, I’d like to make something based on the attached, with lap joints attaching those slats to two 27″ wide table legs. I’ll probably use them on the bottom of the table legs as well. Do I need to do anything to allow for movement in the legs when I make the joints?
Thanks,
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Worked late, I'm tired, and I'm getting old . . . but I can't understand what you're proposing.
The picture looks somewhat like a trestle table, only the rail is just under the top rather than a foot or so off the floor. The picture recalls the Shaker trestle tables with a high rail. My understanding is the high rail was often repaired because it couldn't resist the side stress with the legs.
"Do I need to do anything to
"Do I need to do anything to allow for movement in the legs when I make the joints?"
I'd say yes. The wide legs are going to move with the seasons, as will the slab top. So, that movement will need to be anticipated. The center rail under the top in the photo appears as if it might direct movement from the center to each side on the top. The two end rails, however, are a little puzzling, since they would move away from the center, and would likely fail if attached to the legs.
With a slab top that substantial, I'd also be concerned about racking along the length of the top. You might need a second rail, closer to the bottom of the legs to prevent that.
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