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Carey Mitchell
111 posts
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Article on wood shrinkage and effect on furniture
https://www.extension.purdue.edu/extmedia/fnr/fnr-163.pdf
Carey Mitchell
2 Replies
Thanks for posting.
Ryan/// ~sigh~ I blew up another bowl. Moke told me "I made the inside bigger than the outside".
Good post Carey
A good article on a subject all woodworkers need to have the basics down. Just some of the methods to get there are a bit like homework for a math class. The internet has opened up a library for anyone to use, and many wood species are noted online to their individual characteristics in this regard. I often use the Wood Database where many species are noted, and using the filters on the right side of the main page, a lot of info is available.
My other addition to this is the map of the US, which shows current RH. Each state is clickable as well to get you down to local numbers. It's interesting to check often for a while to see if your area changes much. I know where I am, it is hardly ever the same, day to day.
My other other add is Air dried is much different in this regard to Kiln dried. I see my air dried wood jumping from normal woodworking levels in the dead of Winter, and during the warm months I've seen air dried woods that at one time were 6 to 8% jump to 19 or so. That range makes using it a bit of a crapshoot. Kiln dried wood stays much more stable. The cells shrink under the heat, and aren't available to absorb as much moisture.
A good article on a subject all woodworkers need to have the basics down. Just some of the methods to get there are a bit like homework for a math class. The internet has opened up a library for anyone to use, and many wood species are noted online to their individual characteristics in this regard. I often use the Wood Database where many species are noted, and using the filters on the right side of the main page, a lot of info is available.
My other addition to this is the map of the US, which shows current RH. Each state is clickable as well to get you down to local numbers. It's interesting to check often for a while to see if your area changes much. I know where I am, it is hardly ever the same, day to day.
My other other add is Air dried is much different in this regard to Kiln dried. I see my air dried wood jumping from normal woodworking levels in the dead of Winter, and during the warm months I've seen air dried woods that at one time were 6 to 8% jump to 19 or so. That range makes using it a bit of a crapshoot. Kiln dried wood stays much more stable. The cells shrink under the heat, and aren't available to absorb as much moisture.
