coating the walls of the cavity with a coating material by depositing coating material in the cavity, closing off the cavity, and rotating the stack of base sheets in such a way that the coating material flows around and progressively coats {HEAD ~ the walls} of {TAIL ~ the cavity}; and 
of
coating the walls of the cavity with a coating material by depositing coating material in the cavity , closing off the cavity , and rotating the stack of base sheets in such a way that the coating material flows around and progressively coats { HEAD ~ the walls } of { TAIL ~ the cavity } ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH