Years back when looking for these to cover a 4x8 table top I ran into a company that bought these mats after they were poured and they cut them to shape and printed the lines. They sold me a few of the rough shapes and I could glue them on the table top and go around the edges with a laminate trimmer. Well that was over thirty years ago, and I need a new one and can't find one. I don't like those poly styrene mats near as well as the green Olfa type. Anyone have any info?