Preferably said cutter is linked to {HEAD ~ a rotatory actuator} to rotate {TAIL ~ said cutters} 
to rotate
Preferably said cutter is linked to { HEAD ~ a rotatory actuator } to rotate { TAIL ~ said cutters }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL