The kiln is heated further to a temperature which may be above {HEAD ~ the noted upper limit}, to obtain {TAIL ~ the maturing point} of the clay and glazes 
to obtain
The kiln is heated further to a temperature which may be above { HEAD ~ the noted upper limit } , to obtain { TAIL ~ the maturing point } of the clay and glazes
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH