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Reply by Nicholas Hall

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Posted on Are Most Benchtops Woefully Underclamped during Glueup? (probably not)

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Nicholas Hall

348 posts in 731 days


#1 posted 622 days ago

@ Monte: It’s actually not that much more force than I typically use on a kitchen table-top. For a kitchen tabletop with a finished thickness of 1” x 6 ft long, made out of cherry, with the quartersawn grain in the glue joint, the table above would give us 250psi*72 square inches or 18000 total pounds of force exerted. That means I need 17 clamps to do a 6 ft long tabletop. I currently use 10, just because thats how many I have.

The trouble comes when you get to cherry and oak, because these have more demanding force requirements for an optimal glue joint. But by the same token, they are much stronger woods that are more resistant to the force so no wood is going to be damaged, particularly with when using cauls.

-- Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read. -Groucho Marx


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