An actuator is connected with the base to move the holder from {HEAD ~ the initial position} to {TAIL ~ the cutting position} 
An actuator is connected with the base to move the holder from { HEAD ~ the initial position } to { TAIL ~ the cutting position }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL