John Weber on tue 28 mar 00
Maybe someone can help me with what may be a problem or not, but I am
experimenting in flux variations in a clear base glaze. One of the glaze
tests ended up with a nice surface but inside the matrix were tiny bubbles.
Is this a problem from a food safe point of view? The copper oxide stripe I
brushed over the top of the glaze came out a dynamite red. Here is the
formula, fired to Cone 9/10, Reduction:
Flint 13%
Custer Feldspar 39%
Wollastonite 15%
EPK 13%
Volcanic Ash 20%
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