Reply by Kazooman

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Posted on Expansion and Contraction..Am I thinking correctly

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1408 posts in 2558 days

#1 posted 02-09-2017 10:27 PM

Thanks for the great explanation Clin.

Imagine cutting a square piece of stock across from corner to corner. That makes an equilateral triangle with two equal length sides and 45 degree angles in the corners. Now expand (or contract) along one of the sides and you no longer have an equilateral triangle and the 45’s are gone. That is just what would happen in this case. The joint will fail.

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