It was somewhere outside Barstow when wrote:

Hi all. A chessboard I had made for me is quite bowed, and I'd like to
fix it.

What's it made of ? If it's veneered, then you'll take the surface
off it and lose the board.

If it's made from glued up solid blocks, then it shouldn't have warped
so much. This type would be thicknessable to flatten it, but then it
shouldn't need to have it done.

What's it made of, and how much bow is there ?