I have this model of a retractable dining table. As the title says, shading is off no matter what I do. I recalculated normals, removed the bevel modifier, used sketchfab's exporter, unlinked all objects, tried smooth and flat shading and it still shows weird shading on the table top.
Can anyone maybe take a look at why this happens?
Model page: https://sketchfab.com/models/f1ebd9d924db46c79695cd773e625e6f
Blend file: http://www.pasteall.org/blend/40254