Crystallization of this glaze gives insight into why it can host the floating blue effect


Thursday 15th August 2013

These two mugs have the insight-live.com/material/32">Alberta Slip base cone 6 GA6-A glaze on the inside and GA6-C on the outside (it just adds rutile to GA6-A). The left one was cooled normally (kiln off at cone 6 after soak). For the mug on the right, the kiln was soaked for half an hour at 1800F on the way down to develop the rutile blue glaze on the outside. But during this period crystallization occurred on the inside also. This provides an insight into my this GA6-A base hosts floating blue effects but GA6-B does not: The amount of Al2O3 is much lower, that improves melt fluidity and acts as a catalyst for crystallization.

Pages that reference this post in the Digitalfire Reference Library:

GA6-A - Alberta Slip Cone 6 transparent honey glaze, Ravencrag Slip vs Alberta Slip floating blues at cone 6 oxidation, Titanium instead of rutile for floating blue, This titanium blue fails when we switch frits, Crystallization


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