table skirts

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Forum topic by jakej posted 07-31-2011 01:34 AM 994 views 1 time favorited 2 replies Add to Favorites Watch
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1 post in 2486 days

07-31-2011 01:34 AM

this is my first project im am making a 4×8 ft. table with 3/4 in plywood and 3/4 in wood flooring strips to look like a basketball court,here is my problem the table is starting to warp width wise is there anything to do to correct this

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View Grandpa's profile


3259 posts in 2669 days

#1 posted 07-31-2011 02:15 AM

What most people don’t realize is plywood does have grain. We think it is laminated with grain crisscrossing and it does but the majority of the grain in a sheet (according to the people that make plywood) runs the same direction as the surface grain runs. So your plywood is doing exactly what we would expect. Now how do you keep this from happening. Well, you could make a frame and pull it down to the frame. That should help. Of course the stronger the frame the straighter it will keep the plywood. I dont think you would want to permenantly attach the plywood to the frame because the frame isn’t as stable as plywood. Maybe someone else will have some thoughts on this. Is this plywood exposed to sunshine. Sunshine soes crazy things to wood.

View DLCW's profile


530 posts in 2648 days

#2 posted 07-31-2011 04:36 AM

Make an apron base for the table. Then cut dados into the apron. Then make wooden clips that will hold the top to the apron. I’ve attached a simple Sketchup model of what this looks like. This should give you a basic idea of how to get this started. Dimensions are totally your decision. For dados I would make them 1/4” x 1/4”. Make the little blocks about 2” long x 1” wide x 1” thick. Then cut the rabbit into the little block leaving the 1/4” protrusion that will fit into the dado in the apron.

Like Grandpa says, plywood moves. DOn’t try and completely stop the movement because it might start tearing itself apart. It doesn’t move nearly as much as solid wood but it still moves. That is the purpose of the little wooden blocks. It will hold the top to the apron but still enable it to move.

-- Don, Diamond Lake Custom Woodworks - - "If you make something idiot proof, all they do is make a better idiot"

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