Reply by Rich

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Posted on Building shelves, need advice

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4541 posts in 1005 days

#1 posted 04-18-2017 10:42 PM

This is a little confusing. The OP said the boards cupped. Then he was advised to not stand up the boards because they will warp. A cup is across the board, and warping, or bowing is along the board. Standing a board on end will not cause cupping. It was likely caused by the factors Barry laid out.

As for leaning boards becoming warped, I’ve left lumber standing against the wall for long periods, and I’ve never had a problem with warping. Take a look at some great woodworker’s inventories, and the boards are often standing on end. Dave Marks comes to mind. He did a show focusing on his wood storage shed. The wood was vertical. Woodworker’s Source, where I shop here, has all of their exotics standing in racks.

In general, gravity doesn’t affect wood like that — it’s the environment. If gravity could do it, then the warped cherry board that I supported on the ends and put 40 lb of bricks in the middle of, would have straightened out. It didn’t.

-- Knowledge is not skill. Knowledge plus ten thousand times is skill. -- Shinichi Suzuki

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