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fix for table top bowed at sides?

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Forum topic by jimmyhopps posted 06-20-2014 06:23 PM 847 views 0 times favorited 3 replies Add to Favorites Watch
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jimmyhopps

222 posts in 1841 days


06-20-2014 06:23 PM

I’ve got my table top glued up and looking good, other than one end of it has a bit of a bow in it – if you are sitting at the head of the table, the left/right sides curl up and the center is lower. given the table design i can’t go back now with a plane and shave it off (and i’m not sure it wouldn’t curl more.

the top is built from 7 boards across each about 1” thick. to give it a more beefy look/feel, i glued a secondary set of boards around the bottom perimeter of the table (so its 1.75” thick top to bottom around the edges, and extends from the outer edge, inward towards the center for about 8”). I believe this second glue contributes to the bow. I can push it flat and have clamped it for a while also, but it quickly goes back, in part because the bottom perimeter is then in compression

To address this, i was thinking of cutting one or more slots through the bottom .75” boards such that they are not contributing / contributing less to the bowing – leaving the main tabletop untouched – there is a bevel on the sides of the table, so these slots won’t show too unless one is below the table. slots would be parallel with the brown colored wood that you can see in the picture. and after cutting the slots, i plan to put some epoxy in the slots while holding it all flat with a caul. that way, the bottom boards would certainly not be contributing to the bow, and would have some tension in it to help keep the main top flat if it top tried to bow.

Think this will work? other suggestions.


3 replies so far

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BinghamtonEd

2281 posts in 1831 days


#1 posted 06-20-2014 06:55 PM

What about cauls underneath to pull it flat? You could even use steel tube stock screwed in from underneath if you’re worried that the cauls would bow with the table. How are you attaching legs? Could the table bolt to a trestle-style leg, and that would pull if flat?

-- - The mightiest oak in the forest is just a little nut that held its ground.

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jimmyhopps

222 posts in 1841 days


#2 posted 06-20-2014 08:39 PM

I was thinking about doing that (cauls), but I think given the slow pace with which i am moving this project forward, and the rate at which my wife is nagging me about the current small table top currently in its place. that the table top that i’m building may well sit atop the existing table for some time – just double sided tape holding it in place.

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BinghamtonEd

2281 posts in 1831 days


#3 posted 06-23-2014 12:48 PM

If it’s a time thing, I would just go to the local big box store, grab a length of 1” square tubing, and cut some lengths for under the table, drill some holes, and screw it on. You could implement a more elegant solution later on if you wanted to, but that would probably take all of 1 hour, and would at least keep it from getting worse.

I understand 100% about the wife nagging about the time it takes to complete a project.

-- - The mightiest oak in the forest is just a little nut that held its ground.

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