Reply by Robert

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Posted on 2x10 Tabletop with no breadboard? Cupping?

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3632 posts in 2115 days

#1 posted 08-01-2016 03:33 PM

First, the lumber: If you are using syp lumber or any other “construction” grade lumber, it has to be allowed to dry quite a while. You can either measure with a moisture meter aiming for less than 10% or weigh the boards every week and when they are stabilized the weight will be the same. This could take up to a couple months or more depending on the wood, your cllimate and storage conditions.

The breadboard: IMO absolutely necessary for a table like this. These things are prone to some pretty wild cupping. My first, second, third…... ;-) joinery attempt is always in practice pieces. Don’t freak out about it just take some time to practice. As far as technique, you will need some tools depending on how you do it. A dado blade easily plows a groove. Multiple passes.

You can make the tenon using a router. The tenon should be 2” then cut sections back to 3/4” leaving 3 sections 2”. This is where you will put the pins. Keep the tenon about 1” short on both ends and elongate the holes to allow for movement. Do not elongate the middle hole. You can also draw bore to keep it nice and tight.

The tabletop: I would not recommend using boards that wide. I recommend getting 2×12’s and ripping out the pith center which results in mostly 1/4 sawn (much stabler) wood, and it is better looking. After the top is glued up (usually step 1 in a project like this) I would keep it clamped in cauls and wrapped in plastic.

Tools: I usually leave the tenons a little heavy. Do not try to get it perfect right off the saw. A rabbet block plane or large shoulder plane will do the job.

Finally (finally!) I would check out some videos on breadboard ends.

You can do it!!

-- Everything is a prototype thats why its one of a kind!!

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