Reply by HokieKen

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Posted on confused about wood movement with pallet glue up for table top

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10217 posts in 1586 days

#1 posted 11-28-2018 12:13 PM

If you look at the endgrain of a log or a board, the growth rings are circular. Think of wood movement as each of those circles expanding and contracting. Depending on how the lumber is milled, that can manifest as a change in the width of the board or cupping. In actuality, it’s a combination of both. The reason quartersawn lumber is desirable for dimensional stability, is because the rings become approximately straight. No curve = no cupping.

All that being said, I think Rich is right on. That’s a smooth curve and a relatively thin panel. From your description, all your seeing is normal wood movement due to humidity swings. I think if you pull it flat, it will stay that way.

-- Kenny, SW VA, Go Hokies!!!

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