Smooth white mid fire clay Great for wheel throwing or hand building Non toxic and gluten free Great for potters and artists Economical all purpose clay Rocky Mountain Clay's BMX (Best Mix) Cone 6 Pottery Clay is an all-purpose mid fire stoneware clay that is perfect for wheel throwing and hand building. It ranges in firing color from a soft white to a light gray color. This smooth, white throwing body is easy to use and accepts a wide range of glazes and underglazes. With an optimum percentage of clays and raw materials to achieve a silky soft white (no iron spots) clay, BMX can be fired between Cone 5 to Cone 7 but is achieves best results when fired at Cone 6. When fired in a reduction kiln atmosphere, BMX fires white to a light, stormy sky gray. Mixed by Rocky Mountain Clay in Denver, Colorado.