Method for making porous mold for pressure slip casting

A method of making a porous mold for pressure slip casting large size ceramic articles, comprising the steps of:

• casting a fine porous mold layer having an average pore diameter of at most 20 microns and a thickness of 5 to 40 mm;
• applying an adhesive in a pattern to a rear surface of said fine porous mold layer to leave an unapplied portion on said rear surface;
• mixing a liquid resin and a filler of a particle size of 0.1 to 5.0 mm at a volume ratio of 15 to 50:100;
• forming a coarse porous mold layer directly on the adhesive applied and unapplied portions of said rear surface of said fine porous mold layer, and said coarse porous mold layer having a thickness of 5 to 30 mm and made of the mixture of the liquid resin and the filler;
• curing the first adhesive and said coarse porous mold layer;
• substantially sealing an outer surface of said coarse porous mold layer with a sealing adhesive resin after the first adhesive and said coarse porous mold layer have cured;
• and
• connecting at least one pipe to said coarse porous mold layer for passage of water from and air into said coarse porous mold layer.