Special K Grogged - 12.5kg - Keane CeramicsA white clay containing a large amount of pre fired mullite grog cutting down the wet to dry shrinkage and adding building strength. A robust body specially suited to large sculptural work accommodating all hand forming applications, can be thrown with care. Good thermal qualities, can withstand multiple firing techniques. FIRING TEMP CONE SHRINKAGE ABSORPTION 1000 06 5. 5% 17. 4% 1100 03 6. 5% 15. 4% 1222 6 1300 10 10. 2% 5. 9% 1300 10R 12% 3%