I've been drooling over a large piece of plywood in my DH's shop. I made an ironing board out of a piece of plywood
18" X 48". I could have made it longer and wished I had. Found out really quickly that I didn't really have any room to set the iron down and still be able to smooth out a length of fabric 45" wide. This new piece of plywood is about 24" X 53". That would be a really nice size. I set my board on a table which is 24" X 48" and I raised it up with PVC pipe over the legs.