|Monthly Tech-Tip |
The lower black glaze is a base coat G3914A Alberta Slip base (with 4% Mason 6600 stain). The white overglaze is G3912A with tin oxide opacifier, it was specially made for this purpose. Normally I would fire this combination at cone 6, but this time I tried cone 8. It is a little high for this clay body, but the glaze variegation is better.
A mottled glaze created by double-layering glazes of different melt fluidity and color
Ceramic glaze variegation refers to its visual character. This is an overview of the various mechanisms to make glazes dance with color, crystals, highlights, speckles, rivulets, etc.