This is a 50 pound box of clay. The website will only process one 50 pound box of clay to ship in a USPS Large Flat Rate Box per order at this time.
Grolleg Cone 5/6 porcelain. Similar to #15 with more ball clay, making it less white, more plastic and forgiving. Additional silica reduces crazing in some glazes. Good for slab forming.
Wet Color: Very Lt. Gray
Firing Color: Oxidation: White - Reduction:N/A
Consistency: Slightly Firm
Avg. Shrinkage 2±%: 13.9%
Avg. Water Absorption 1±%: 0.12%
COE x 10-6: 5.76
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