Easybuiltmodels.com offers a 13.5 X32 inch board plus 30 magnets for $39.75 (2014 catalog). I bought the smaller one (12X24 inches )and it works great. They use a piece of galvanized sheet metal (no rust) with finished edges. I glued mine down to a piece of 1 inch plywood to keep from bending it.
Last edited by RAYTELI; 12-03-2015 at 02:36 PM.