Does wood retain shape? - Woodworking Talk - Woodworkers Forum
 
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post #1 of 3 Old 02-11-2020, 09:06 PM Thread Starter
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Question Does wood retain shape?

When nailing pine trim, sometimes the wood is forced to take shape of what you are nailing it to. Very rarely is everything straight. My question is: Over time will wood relax in the new shape or will it always be under stress fighting against the nails that are holding it? If it does relax, how long should it take?
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post #2 of 3 Old 02-11-2020, 09:25 PM
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welcome to the forum, Steve - what part of the country are you in ?

it would help if you could narrow your question down to a project
you are working on. and, why the question ?
If I am forcing trim into its unnatural shape, I use more nails.
I have never gone back to see if it holds its shape or not.
it is not clear exactly what you are wanting to do.

.

-- I am a painter. That's what I do. I paint things --

Last edited by John Smith_inFL; 02-11-2020 at 09:36 PM.
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post #3 of 3 Old 02-12-2020, 09:47 AM
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Whelp, to answer your question, let's take a look at something a little unconventional; longbows. Specifically, the wooden ones. You've got a wood stick that starts off straight and is forced into a bent by tension from the string. Ever see a longbow with it's string off? If so, you'll know why I said "starts off straight" after a while being under tension will force the previously straight piece into a permanent slight bend

So, long-winded answer to your question, yes. If a piece of wood is forced into a shape after enough time it will start to set into that shape, BUT it won't perfectly take that shape. There's always going to be some springback, i.e if you wrap a piece of wood around a 12 inch radius curve and hold it there for a decade, once you stop holding it it'll relax to a 14 or 18 inch radius

So, you know, don't plan on taking the nails out and use plenty of glue

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