BULK ORDER of 10 or 25 bags of clay at 10kg per bag. Economical general purpose clay, suitable for handbuilding or wheel throwing. Recommended bisque 1050℃ and can be glazed from 1080-1250℃.Needs higher firing temperatures if vitrification is required.Shrinkage rate Bisque 8%. Earthenware 9 %. Midfire 10%.