My sweetie bought the round metal thingy (sorry, not know what it is called) that goes between the layers, then cut two squares of plywood 21x21 inches and put it together in like a lazy susan. He sanded it all nice and smooth. I put a square cutting mat on it and it works great. He did get a large size ring rated to hold like 200 lbs. It was only a few dollars and the wood was scraps he had. Total cost was under 10.00. Now it is heavy but I don't carry it around. Just put it on the table when I want to use it.