In a preferred embodiment, the shaping means has a length greater than the tubes diameter, a width less than the tubes diameter and {HEAD ~ the method} further comprises {TAIL ~ the step} of shaping the distal tip of the tube by aligning the shaping means transversely to the axis of the tube and passing it axially through the distal tip of the tube 
In a preferred embodiment , the shaping means has a length greater than the tubes diameter , a width less than the tubes diameter and { HEAD ~ the method } further comprises { TAIL ~ the step } of shaping the distal tip of the tube by aligning the shaping means transversely to the axis of the tube and passing it axially through the distal tip of the tube
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 HEAD OTH REL 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 OTH OTH OTH OTH OTH