Reply by Lazyman

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Posted on Revert cupping in sheet goods with wood glued on top?

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9623 posts in 2850 days

#1 posted 12-02-2021 12:03 PM

Even if you are able to get them flat again using moisture, it may just happen again so I would be hesitant to sell them with this in mind. Several things could have contributed to this. The TB glue might be part of the reason it happened. It added moisture to the glue side that hasn’t exited yet but the top dried out some. It could just be that that the wood wasn’t completely dry or at least acclimated to your indoor environment after planing. How long after planing the wood did you wait before gluing them down? You should wait several days (I would probably wait a couple of weeks) with the wood stored so air can circulate around both sides after planing to let everything settle down and make sure that there is no warping before using it. I don’t know how many times I have planed wood and left it sitting flat on a work bench for a couple of hours only to find that it cupped because air could not get to the underside. Even so, you may get better results using a 1/16” thick veneer rather than the 1/4” thick wood.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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