While attending the awards banquet for the San Francisco Chapter of CLCA a couple of weeks ago, I had a chance to talk with Mark Shepherd from Current Cutting Technology. Mark uses a high pressure blast of water, along with digital equipment to cut shapes and interesting tessellations out of stone. The result is that there is no cutting required for a wide variety of unique and interesting designs. His website is definitely worth a visit if you looking for an interesting design flourish for a stone patio, without the hassles of cutting stone on-site.
Image from Current Cutting Website