I have several panels to glue up on the project I just started (YES, I am woodworking again!!!! ) so I decided it was time to finally make a few sets of cauls. I plan to use them as clamping cauls as well as for holding a panel flat when gluing them up.
I am trying to decide if there is any disadvantage to cutting a bow or slight curve in them for flat panel glue ups? I can't see one but I have never used them except for once or twice to solve some problem and then I just what ever scrap I could find.