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Patricia Kaiser

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  1. Patricia Kaiser

    Clay - Glaze Interaction?

    Thanks again, Natas! The local library has that book. It looks like I will have some study to do to make some sense of what exactly is going on with this glaze.
  2. Patricia Kaiser

    Clay - Glaze Interaction?

    Thanks again, Natas! The local library has that book. It looks like I will have some study to do to make some sense of what exactly is going on.
  3. Patricia Kaiser

    Clay - Glaze Interaction?

    Thanks, Natas, your help is appreciated! In this recipe, rutile is 6% added to the 100% base recipe. Being a real newbie, I am not prepared to mix another batch of that recipe, but I wonder what caused the reaction with porcelain and rutile. What is it about rutile that would cause this problem? Trying to learn, but not wanting to trouble you for readily available information. If you know some resource that can explain more, I would appreciate your help again to direct me to further details.
  4. Patricia Kaiser

    Clay - Glaze Interaction?

    My problem is between a lovely Buttercup Yellow glaze and Laguna/Miller ^6 porcelain. Sometimes the glaze, when fired, contains white bumps and clumps like scattered small and medium curds of cottage cheese, irregularly spaced on interior and exterior of a piece. This was found most of all on a bowl with thin glaze, but on pieces with thicker glaze there are occasional white spots. One of these spots has a tiny crater, indicating what exactly I don't know. The glaze recipe includes EPK, Frit 3195, Neph Sy, Silica, Wollastonite, Bentonite, and Rutile. On Laguna brown ^6 clay, the glaze is perfect, with no bumps. This is why I think there may be an interaction between the porcelain clay and glaze. Thanks in advance for any helpful information. Patti Kaiser *********
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