Reply by Woodknack

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Posted on Flattening warped table top

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12866 posts in 2827 days

#1 posted 05-22-2017 06:31 AM

Depends on why it warped. 1/8” isn’t much, it could just be a fluke of the wood but generally tabletops cup because moisture is moving in or out of one side more than the other. Did you finish top and bottom equally? Did you lay it flat on the saw/table/floor cutting off air flow to one side? Did you finish one side and leave it for a few days before finishing the other side? I agree with Fridge though, that the aprons will probably keep it flat if it was only 1/8” out. Or battens if you won’t have aprons.

... I should alternate the grain pattern so one board grain cups up, one cups down, – Bradb7888

Myth, don’t bother. It doesn’t prevent cupping. Arrange boards for best appearance.

-- Rick M,

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