In a hot knife assembly having a cylindrical tube surrounding {TAIL ~ a resistance heater} for heating {HEAD ~ the knife} the improvement comprising: 
In a hot knife assembly having a cylindrical tube surrounding { TAIL ~ a resistance heater } for heating { HEAD ~ the knife } the improvement comprising :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH