[masraum]

Originally Posted by herr_oberst

It won't warp if you cut it apart and glue it back together with the grain reversed, and the glue joint will be the strongest part of the plank. You're doing the same thing.

Ah, got it. I suspect this may have been a bit warped when I bought it. I usually go through about 1.5-2x as many boards as I buy trying to find straight boards in good shape, but I must have gotten some 8' boards that were just close.