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