BULK ORDER of 10 or 25 bags of clay at 10kg per bag. The Bulk options are best for schools, studios and workshops as are the most economical price per bag for purchasing this clay. This is the best general purpose paper clay, suitable for handbuilding or wheel throwing. Paper clays need high firing temperatures if vitrification is required.Recommended to fire in an electric kiln with a bisque temperature 1050℃. and glaze temperature 1050-1280℃. Shrinkage rate Bisque 6%. Earthenware 7 %. Midfire 11%. Stoneware 12%.