On Wed, 6 Aug 2003 20:55:14 +0100, "David W.E. Roberts"
So this is literally just the three boards? Presumably they're
biscuited together ?
It sounds like a lousy design, because of the warping problem.
Depending on how you stack the three planks (whether you put them all
the same way round, or alternate them), you can control some of this
warping, or at least switch it between one big C curve, or a
The boards are too wide. They should be narrower, even if this needs
more of them. Three boards is too few for something the size of a
table. My workbench top is 2" oak and that's ripped down to 3" & 4"
wide strips to keep it flat, even though I got the timber in as 12"
Much though depends on the tree's size (which is hard to guess for oak
- they come in all sizes). If this was a big tree, then the boards
would be a lot more stable than something small with highly curved
I'm not keen on this sort of thickness for a tabletop. It's too thick
to hold it flat by fastening it to a frame, and it's too thin to stay
stable on its own. I'd think some warping is inevitable, but it ought
to be controllable to reasonable limits. If you're going to do this
sort of simplistic rustic style though, you need to use quartersawn
timber - use radially cut boards, so that their movement is simply
shrinkage, not curvature.
A table like this should also have breadboard ends, to give some
control against movement.
To fix it, I think you've got no hope with trying to soak it, not much
chance trying to nail it down to a new subframe, and the only option
is awkward. If I had to do this, I'd saw each board in half, flip half
of them over, join them back together and then thickness the lot flat
again. A lot of work !