I cut a piece of 3/4" birch plywood about 10"x60". It will be the side of a book case. If I lay it on a flat surface it has a slight hump in the middle of about 3/16". Has anyone ever tried to undo this warp?
I have the board suspended between two saw horses with about 50 lbs of weight on the middle. the weight flexes the board plenty, but when I remove the weight it springs back. I left the weight on for 24 hours. I also tried warming the wood with a heat gun. Anyone have any ideas? do i have to leave the weight on for several days?
Note: This is the last time I buy ply at Lowes.
Thanks
Mitch