I am wondering if one can stack tiles since I am only finding 3/8" tiles and if stacking them to make them between 1/2" to 1". I don't know if they will crack or do something else. Any thoughts? Or if anyone knows where I may go to have my old pizza stone (too big for my new home's oven) cut to size. I live in southern Westchester County in NY state. Surprisingly lots of tile stores are not too helpful and I am not finding quarry tiles @ Home Depot or elsewhere.