Blue Chu from Chinese Stoneware Glazes by Joseph Grebanier Custer Felspar 56 flint 22 whiting 13 ash 9 yellow ochre Also not a blue chun, also giving me serious flecks from iron oxide. Underfired on inside of bowl.
Cone 6 electric Volcanic ash 82 Whiting Lithium carbonate Gerstley borate Bentonite 1 Magnesium carbonate 5 add Black copper carbonate Tin This is the blue green glaze over the Tenmoku style glaze which is breaking the surface like an oil spot glaze.
OP: Metallic Tomato Red Frit 3134 Spodumene Bone ash Carbonate magnesium Whiting EPK Silica Bentonite 2 Red Iron Oxide Total 100 And as you can see no stain! This is a cone 6 glaze and i fire it in my electric kiln!