Potters & Sculptors - Making Rock from Mud
Diane, I've used a number of different type of stoneware bodies including Laguna B-Mix, Amaco Warm Brown Stoneware, and others. Have had many problems with pinholing especially which the Stontium Crystal Magic and cobalt carbonate and cobalt oxide colorants in the mix. I think I'm resigned to moving to porcelain now to try and combat these problems which cause a high percentage of pots that I have to take a hammer to. Just trying to save you the pain. Brown clays have a high iron content and other impurities that are likely to cause outgassing to occur and Steven Hill's glazes tend to accentuate that. Plus colors are much more muted than on a white clay body. I'm doing tests with several different porcelain clay bodies now but tend to think that porcelain will help. FYI
Not at all. The glazes work very well on red stoneware. I am using Plainsman M-390. Just posted some examples.