Designing Around Wood Movement

GockI joinery will keep you out of trouble 99 percent of the time when dealing with wood movement, but here are some other basic points to consider. • Ideally, all the w<xxl you use in a project should lx- at the same moisture content so die pieces will move at die same rates. (There arc exceptions when vou'rc deliberately \v< >rking green \\ ood. )

• \\ <x>d species used together in a project should have similar rates of movement. (See chan. pane -i2.)

• Allow for future expansion if you're working wood that's just been kiln-dried to 6 percent moisture content, since the relative humidity in vour area

is unlikely to be low enough to maintain that moisture content.

• Allow for winter shrinkage if you built! a piece in summer, and vice versa.

• Use air-dried or construction grade wood for outdoor projects, and kiln-dried wood for indoor furniture.

• Choose wood species with a small range of movement (see chart) for projects that will be exposed to wide swings in relative humidity.—J.C

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Wood Working 101

Wood Working 101

Have you ever wanted to begin woodworking at home? Woodworking can be a fun, yet dangerous experience if not performed properly. In The Art of Woodworking Beginners Guide, we will show you how to choose everything from saws to hand tools and how to use them properly to avoid ending up in the ER.

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