Reply by Rich

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Posted on Expansion and Contraction..Am I thinking correctly

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5155 posts in 1200 days

#1 posted 02-10-2017 04:29 PM

I just had a quick flashback to Trigonometry. If the width of the boards shrinks by 1/4” (1%) from 25” to 24 3/4”, the miter angles will change by about 0.3 deg each. The gap formed would be almost 3/8”.

This agrees with JayT s result above using Sketchup.

- ChuckV

We have to deduct points because you didn’t show your work :)

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

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