NOT a stupid question! I think you need to know how sturdy the legs you want to use are. I have use MDF but I picked one that was too flexible and was sorry. I have also used Melamine..but it gets wet from the moisture the iron picks out of the air. Pick one that will not flex in the dimensions you want. (I can just see it now...lots of quilters in the plywood aisle of the home improvement store..trying to flex the plywood! lolol)