I'm continually battling warpage that occurs after spraying water base poly paint on (primarily larger) drawer fronts. See the pic below...it's a 12-1/2" tall x 32" wide drawer front. Soft maple, 11/16" thick, and is warping cross-grain. I've found that if I flip the board over and spray a thick coat on the back side it usually pulls the drawer toward flat. Anyone else dealing with this? Any tricks that might minimize the effect? Perhaps first coating with an oil sealer such as Arm-R-Seal would help by not allowing the water based poly to penetrate the grain?
This particular drawer front will be attached to a tall drawer box (10 1/2") so 2 mounting screws centered will likely pull it flat(er).