I am working on producing a Summer bowl and a Winter bowl. The Summer bowl may eventually be made in porcelain but until I get a shape I am happy with I am going to continue to use stoneware. The Winter bowl has been made using black chunky clay, I am finding that I can thow with this clay without too much trouble especially if I use slip instead of water. Turning it is a little trickier but also not impossible. I tried throwing these bowls with stoneware and then adding a layer of the black chunky as a slip, mainly to keep costs down but I am not happy with the results, the beauty of the black clay is the way it tears and distorts around the edges whereas the stoneware looks too neat. I guess I am just going to have to get selling if I am going to continue to use the black clay.