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Wood and Water/Humidity

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Cloudsabovenine

Active Member
Joined
Nov 10, 2009
Messages
25
Location
Northeast Ohio
I was watching an episode of "The Woodright's Shop" yesterday and Mr. Underhill was demonstrating the ability to do things with wood based on humidty and water. For instance, he showed that by gluing a strip of wood with the grain longways to a strip of wood with end grain, depending on the humidity it would cause the endgrain side to swell or contract and draw the two peices glued together to one side or the other for what made a pretty basic barometer. There were some other things he did as well.

My question is this, in building wood aircraft, what considerations need to be made in relation to how an aircraft is put together, or what time of year it is put together? Would a wing built in a dry winter have problems mating to a fuse built in a humid summer? Does expansion/contraction happen to the point where you must compensate for it in making cuts and such?

Thanks
-Sean.
 
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