My nephew made us a flat screen tv cabinet....or at least almost did in his HS shop class. The cabinet still lacks doors and a few details, it also does not have a finish. It's made from white oak. It set in my shop for a month and the glued up top warped some. I decided to just let it sit and watch it. The top has gotten better since it's gotten cold out but it's still not flat. Now for the advice. It's about 3/4" x 60" x 20".
Should I saw it down the center of the warp and flip one side and reglue to reduce the warp.
Should I try planning and take a chance on making it to thin.
I saw an article that said put the cupped side down in the grass on a sunny day and that would correct it.