LumberJocks

Reply by johnstoneb

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Posted on 2x10 Tabletop with no breadboard? Cupping?

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johnstoneb

3131 posts in 2715 days


#1 posted 08-02-2016 03:02 PM

There is nothing wrong with using construction grade lumber for your table top. Just use it correctly. 8” wide will still cup if plainsawn as most construction grade lumber is. Bring it inside, stack it and sticker it for a few weeks or month. trim the edges straight and square and rip down the middle so you are 4” to 6” wide then alternate grain pattern when gluing up. Alternating grain causes the forces to cancel each other out to some degree. Ripping down the center relieves the stress causing cupping more than any thing else. Use breadboards if you want. If you use full width 2’ plainsawn kiln dried lumber direct from the lumber yard it will cup and you can’t stop it.

-- Bruce, Boise, ID


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