HAVE YOU CHECKED OUT HOME DEPOT OR LOWES? THEY HAVE PLYWOOD CUT TO THE SIZE YOU WANT. BELIEVE THEY ARE CALLED QUARTER SHEETS. THEY WILL MAKE ONE CUT. HAVE THEM TRIM TO THE SIZE YOU NEED. MAKE A PAD OUT OF COTTON BATTING AND FELT. COVER WITH A FABRIC FOR IRONING BOARD COVERS. I SAW WHERE THEY SCREWED IT TO THE IRONING BOARD. OR YOU CAN GLUE TWO BOARDS ON THE BOTTOM THAT WILL KEEP THE BOARD FRFOM SLIDING OFF.