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