Recommended both for wheel-throwing and hand-building, Amaco No. 77 Terra Cotta Earthenware Clay is made from a mixture of finely ground red and buff clays, plus a medium mesh grog. Added to make the fired pottery more porous, grog also reduces cracking, shrinking, and warping. This clay is ideal for making tiles, planters, and other pieces intended for outdoor use.
Amaco No. 77 fires from cone 06–5 (1855°F – 2205°F), with a recommended glaze firing of cone 5 (2205°F). At cone 04 the clay is a terra cotta with a shrinkage of 6.75% and an absorption of 9%. At cone 5 the color is a rich brown-red with a shrinkage of 10.5% and an absorption of 0.9%.
This clay is talc free. The 50 lb carton contains two 25 lb bags of moist clay.
Note — This clay is AP non-toxic when moist.
Note — Any combination of clay, plaster, sand, and molding material totaling 50 lb or more does not qualify for our free shipping offer.
® Amaco is a registered trademark of American Art Clay Company.