various additives often combined with the starting powders, usually in small are amounts. The additives include(1) plasticken to improve plasticity and workability: (2) binders bond the ceramic particles into a solid mass in the final product, (3) wetting to agents for better mixing(4) denocculants, which help to prevent clumping and premature bonding of the powders and(5) lubricant, to reduce friction between ceramic grains during forming and to reduce sticking during mold release