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