My pottery goal for this year is to learn to create Hill-type glazes and successfully fire them. I am just getting started with this project. I would prefer to use brown stoneware, probably starting with Highwater Brownstone. I also plan to try firing the glazes I already have with Hill's firing schedule and then make his strontium glazes when the weather warms up, simply because I prefer to mix glazes outside. I don't really like glossy glazes and want to see what the ones I have do in his firing.

Does anyone know of any potential problems with the brown clay or firing schedule?

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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

Brian, thanks for that info. I spent two years figuring out why I was having pinholing with other clays and don't want to repeat that.


Not at all. The glazes work very well on red stoneware. I am using Plainsman M-390. Just posted some examples.



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