{HEAD ~ The shell mold} 1, wherein {TAIL ~ the shell mold} further comprises an alumina stucco layer having an average particle size greater than 50 microns 
wherein
{ HEAD ~ The shell mold } 1 , wherein { TAIL ~ the shell mold } further comprises an alumina stucco layer having an average particle size greater than 50 microns
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH