Reply by JayT

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Posted on Expansion and Contraction..Am I thinking correctly

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6358 posts in 2817 days

#1 posted 02-10-2017 03:13 PM

I’m agreeing with clin, Chuck, Kazoo and the others. Seasonal changes will cause a problem, how much is open for interpretation. Just for kicks, I drew a 25in wide mitered corner in Sketchup and then shrunk the width of each side by 1%, leaving the backs alone and taking the movement at the front of the counter. Here was the result.

Even this small, you can see the gap. It measures out at ~3/8” in Sketchup. Now, I don’t know for sure how much flat sawn walnut will move with seasonal changes, but it will be enough to cause a noticeable gap.

-- - In theory, there is no difference between theory and practice. In practice, there is.

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