Amaco No. 77 Terra Cotta Earthenware Clay is made from a mixture of finely ground clays, medium ground clays and grog making it more forgiving and an large pieces may be reduced without cracking due to shock. The coarse formula allows air that may be trapped to be easily released making it an excellent red clay for Raku. Excellent for throwing of large pieces, hand building of any size, even large outdoor sculptures, without the fear of slumping.
Bisque fire to Cone 04 (1971ºF, 1077ºC). Amaco No. 77 fires from Cone 06-5 (1855ºF-2205ºF), with a recommended glaze firing of Cone 5 (2205ºF). At Cone 04, the clay is a terra cotta color with a shrinkage of 6.75% and absorption of 9%. At Cone 5, the color is a rich brown-red with a shrinkage of 10.5% and absorption of 0.9%.
A 50 lb. box includes two 25 lb. blocks of clay, each in a polyethylene storage bags, so feel free to use the amount required and store the rest for future use. Clay in moist form presents no hazard.
Family-owned since 1919, American Art Clay Company, Inc. was the first manufacturer of modeling clay in the United States, the first in the industry to formulate lead-free glazes and is the leader in offering safe ceramic materials. Amaco makes more clay than any other company in North America.
Not many companies can say that they’ve been in business for more than 87 years–and almost anyone would agree that such longevity is a pretty remarkable event. Amaco is proud to claim this distinction, celebrating new products and an optimistic outlook for the next 87 years.