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