The presence of the intermediate layer also allows the use of a cutting tool terminating in a cylinder that has a blunt cutting edge, in addition to {HEAD ~ tools} terminating in {TAIL ~ cylinders} that have sharp cutting edges 
terminating in
The presence of the intermediate layer also allows the use of a cutting tool terminating in a cylinder that has a blunt cutting edge , in addition to { HEAD ~ tools } terminating in { TAIL ~ cylinders } that have sharp cutting edges
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH