Once in proper location, as determined in any number of {HEAD ~ known ways}, such as by pressure, distance, or {TAIL ~ electronic eye}, the cutting tool assembly 16 rotates about the tube 20, causing the insert form cutter to cut a plurality of grooves into the tube 
such as by
Once in proper location , as determined in any number of { HEAD ~ known ways } , such as by pressure , distance , or { TAIL ~ electronic eye } , the cutting tool assembly 16 rotates about the tube 20 , causing the insert form cutter to cut a plurality of grooves into the tube
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL 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