Graphite mold and fabrication method

Claim 1

IN THE METHOD OF PRODUCING A MOLD ABOUT A DISPOSABLE PATTERN WHICH IS REMOVED TO DEFINE A MOLD CAVITY, THE STEPS OF WETTING THE SURFACE OF THE PATTERN WITH AN AQUEOUS DIP COAT COMPOSITION THE ESSENTIAL SOLIDS OF WHICH CONSIST OF GRAPHITE FLOUR AND COLLOIDAL GRAPHITE, COVERING THE SURFACE OF THE PATTERN WHILE WET THE DIP COAT COMPOSITION WITH A GAPHITE STUCCO, REPEATING THE OPERATIONS OF WETTING WITH THE DIP COAT COMPOSITION AND STUCCOING FOR A NUMBER OF TIMES WITH INTERVENING DRYING, WETTING THE BUILT UP LAYERS WITH A DIP CAOT COMPOSITION THE ESSENTIAL SOLIDS OF WHICH CONSIST OF A CERAMIC FLOUR AND COLLOIDAL GRAPHITE, COVERING THE SURFACE WHILE WET WITH THE DIP COAT COMPOSITION WITH A CERAMIC STUCCO, AND REPEATING THE OPERATIONS OF WETTING WITH THE DIP COAT COMPOSITION AND STUCCOING A NUMBER OF TIMES WITH INTERVENING DRYING UNTIL A MOLD OF THE DISERED THICKNESS AND STRENGTH IS BUILT UP ABOUT THE PATTERN, AND IN WHICH THE COLLOIDAL GRAPHITE IN THE DIP COAT COMPOSITION APPLIED IN THE OUTER LAYERS IS PRESENT IN AN AMOUNT WITHIN THE RANGE OF 1.5 TO 10 PERCENT BY WEIGHT OF THE TOTAL WEIGHT OF THE CERAMIC FLOUR AND THE COLLOIDAL GRAPHITE.