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wenders

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About wenders

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    Barrie, ON Canada
  1. Hello, all. As an advanced beginner, I know a few things about clay and glazes but have not really studied the chemistry. I did do some searching before asking this question but cannot seem to find an answer so I would appreciate replies! I have a straight-forward semi-transparent glaze recipe: - china stone 20 - carb whiting 23 - kaolin 30 - quartz 27 This is a wonderful glaze that I used at La Meridiana School (in Italy), and it fired beautifully on porcelain in both reduction (1280C) and oxidation (1260C). In my studio here, I have used EPK (for raku slip resist), but we also have a bag of calcined kaolin - which I am sure that I was the one to buy it but cannot remember why! My question, then, is what exactly is calcined kaolin and what is its use, i.e. can it be used where something calls for just "kaolin"? Please forgive my ignorance , and thanks! wendy h.
  2. Hi. I hope someone can help, as I have already tried archive and Google searches. One of my treasured copies of CM magazine was from Spring 1995 (I think?!) that featured the ceramist, Emma Luna. There were a few glaze recipes in the article, and now I have misplace the magazine. I know that there are many copper mattes out there, but I want this one; there was also a nice crackle "Radcliffe Apple Green". I would appreciate if anyone can provide a link or other resourse to find these recipes. Thanks.
  3. somewhere between here & there

  4. My fellow rakuteers and I have been having inconsisent results with a long-trusted white crackle glaze, whether on a cone 6 white stoneware or a classic grog rakuware. I think the problem is primarily the glaze temperature (we usually (electric) bisque to 08), and always aim for 1000C degrees in our propane kiln, having achieved some fantastic crackles, mattes, and lustres. In all the material I've seen for raku glaze recipes and reduction techniques, I've rarely seen anything about temperature for glossy v. matte. I seem to recall one workshop where we were told to fire the crackle-glazed ware farthest from the flame and/or to a slighty lower temp. While I thrill at the unpredictability of raku, there's a certain level of stability that would be equally thrilling! Any suggestions?!?
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