PRNF – Black Sculpture Clay with Fine Grog


Firing range: Cone 5-7 (2205º-2295ºF)
Biscuit: Cone 06 (1855ºF)
Water content: 21%
Plasticity (IP Atterberg): 22
Carbonate content (CaCO3): 0%
Drying shrinkage: 7.0%
Firing shrinkage at Cone 7: 4.5%
Porosity (water absorption) at Cone 7: 9.4%
Dry bending strength: 2.0 N/mm2
Fired bending strength at Cone 7: 27.5 N/mm2
Thermal coefficient (a25-500ºC): 55.8×10-7ºC-1



Conveniently comes filmed-wrapped in a 27.6 lb. (12.5 kg) package

Black sculpture clay body with 40% fine grog (up to 35 Mesh).  Formulated for artistic ceramics, it is ideal for sculpture.  The high content of grog confers expression a beautiful texture surface and an excellent behavior during drying and firing.  In reducing atmosphere, metallic effects with shades of blue are obtained.

Available in extruded body (moist form).