Thought I'd chime in here. I've found a pretty good tooling surface if your limited on space like myself. I worked at a hardware store an the place we ordered countertops from had a product called Verona marble. It was a manmade product that was cement based, looked like granite. But it's heavy like 30#'s for a 19x17 oval 1" thick, and hard it sounds like your hitting a steel plate when your working. So you might check the countertop places.