Blackjack Low Fire Clay
Blackjack Low Fire Clay (formerly Activ-Low Fire Clay) is a blend of several natural clays and minerals that produces a smooth white talc body with good plasticity. This earthenware clay is a light gray color when wet yet fires to white. It is great for hand modeling, hand building, slab rolling and can be thrown on a potter’s wheel. This clay is excellent for all skill levels from beginners to professionals, and is non-toxic certified.
This earthenware clay fires in a kiln to maturity at cone 06 and bisque fires at cone 04.
Firing range: Cone 06-04 (1855º-1971ºF)
Plasticity (IP Atterberg):
Carbonate content (CaCO3):
Firing shrinkage at Cone 6: 10%
Porosity (water absorption) at Cone 6: 14%
Dry bending strength:
Fired bending strength at Cone 6:
Thermal coefficient (a25-500ºC):
Are you new to pottery and want to learn more about some common pottery terms? Check out the website for the Donn Zver School of Pottery to find a list of terms and explanations for what they all mean.