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