Comments on: Wood’s wicked ways: the problem https://www.rpwoodwork.com/blog/2010/09/26/woods-wicked-ways-the-problem/ inside the woodshop Tue, 28 Sep 2010 03:16:55 +0000 hourly 1 https://wordpress.org/?v=7.1 By: Rob https://www.rpwoodwork.com/blog/2010/09/26/woods-wicked-ways-the-problem/#comment-15532 Tue, 28 Sep 2010 03:16:55 +0000 http://www.rpwoodwork.com/blog/?p=909#comment-15532 John,

I can’t say for sure what happened with your table top but consider the timing. If it happened just about immediately after the wood was removed (sometimes AS it’s being removed or opened up during resawing), it’s stress release. A moisture issue would be slower – over hours or days. It can be both, too. It does seem like a pretty minor amount of wood that was removed so I don’t know.

Check out the posts on resawing that I linked to in this post for how to predict (usually!) what will happen when wood is opened up.

More to come on this, as promised.

Rob

]]> By: J Nelson https://www.rpwoodwork.com/blog/2010/09/26/woods-wicked-ways-the-problem/#comment-15531 Tue, 28 Sep 2010 02:53:37 +0000 http://www.rpwoodwork.com/blog/?p=909#comment-15531 “Removing a substantial thickness from one side of a kiln-dried board is almost sure to distort it…”

Rob, I’ve had that occur with a work table top run through a large belt sander. The table top was made of kiln dried 2×4’s and I don’t think we took off more than a 1/16 or 1/8 of an inch. The problem was we only sanded one side. I think potato chip adequately describes what happened.

I’ve always assumed that it happened because of uneven moisture exchange. I never considered the possibility that it might be the release of internal stress in the wood.

I guess my question is how do you make the distinction and how do you avoid it? I’m looking forward to your next post.

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