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This inside glaze is G2926B (on Plainsman M340). It is capable of firing glassy smooth, crystal clear and un-crazed even on coarse stonewares. Watch the video 📹 to see the four unusual things we do to get reliable glazes like this. But the recipe is only part of getting success. Mixing it as a thixotropic slurry is another. And the firing schedule: Look closely at the two glazed tiles. The bottom one, although fired lower (cone 5.5) was slow cooled using the C5DHSC schedule - note how much smoother the glass is (the upper one was fired to cone 6 using the PLC6DS schedule).
The outside is a floating blue, GA6-C. These are a dime a dozen but a good transparent is priceless. Did you know that the outside glaze can be made from the inside one by simply adding 2:4:1 iron oxide:rutile:cobalt oxide? This glaze can be stained, opacified and variegated in an infinite number of ways. And it is adjustable (e.g. lower thermal expansion, lower or higher melting).
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We Developed the G2926B Transparent Glaze by Doing Four Unique Things
How I found a ceramic glaze recipe on Facebook, substituted a frit for the Gerstley Borate, added the extra SiO2 it needed and got a fabulous more durable cone 6 clear. |
Recipes |
G2926B - Cone 6 Whiteware/Porcelain transparent glaze
A base transparent glaze recipe created by Tony Hansen, it fires high gloss and ultra clear with low melt mobility. |
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