Apparatus 1, wherein the device is provided with {HEAD ~ means} which follows its rotation and is capable of shearing {TAIL ~ the vitrifiable material} 
Apparatus 1 , wherein the device is provided with { HEAD ~ means } which follows its rotation and is capable of shearing { TAIL ~ the vitrifiable material }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL