Amaco High Fire Clears
AMACO® Sahara High Fire Glazes are compounded to match cone 6 porcelain and stoneware bodies. The Sahara HF glazes are made to fire to cone 5/6 (2205 ºF, 1207ºC/2269ºF, 1243ºC) in oxidation.
HF-9 is a zinc-free, clear, transparent high fire glaze. Because the presence of zinc in a glaze formula may change the appearance of certain colors (green, black, gray, etc.), a zinc-free clear is very important for application over underglaze decoration. Any variation in color intensity of the underglazes will then depend on the individual color stability at Cone 5.