I am building a new sled for my sawstop and I built a pretty cool looking fence which is two 9 ply 3/4 maple ply laminated together and bordered with some poplar for a clean look. Well today is is slightly bowed, and even if I force it flat, there is no way in hell I am getting it square to the blade. I got it close, about 89.5 but that isn't cutting it. Oh well. I'll build a new fence out of hardwood. I have poplar and hickory sitting around that is spare or I dig into the nicer stuff. Hickory will just make the sled 10 tons.
Flat plywood is a thing of the past!!!