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Lesson Plans


Re: Glaze Question for Numo...or anyone

From: Numo Jaeger & Michael Miller (jaegmil)
Date: Tue Jan 25 2000 - 17:47:27 PST

  • Next message: MRJWITZ: "(no subject)"

    Different companies have different formulas for their glaze bases. You
    don't know how they will work together unless you know what they are made
    from. Sometimes mixing a "safe" lowfire glaze with another "safe" lowfire
    glaze produces an UNSAFE glaze. This has to do with combining 2 or more
    chemicals together which separately have a high melting point but when
    mixed together have a lower the melting point. Eutectics.

    You can not mix different cone glazes together in the same firing.
    (well...you can but you need to experiment with this...and not with
    children) You can refire pieces at lower temperatures and apply lower fired
    glazes on top of high fire glazes. You can get some interesting results
    that way. 

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