I have a half sheet of masonite pegboard that has about a 1 inch bow over 4 feet from leaning against a wall for several years. The bow was about 3 inches until I reversed it and increased the lean angle for a month.
I want to use it in a cabinet door for my shop. Is there any way to totally remove the bow. Or--- I will cut the sheet in half and each half will go into a 4' x 17" frame. Will the frame be enough to to hold the sheet straight?