The method 1 wherein in step c there is further included {HEAD ~ the step} of applying {TAIL ~ the filler} under a vacuum to remove air and causing the filler to replace the air inside the exterior tubing 
The method 1 wherein in step c there is further included { HEAD ~ the step } of applying { TAIL ~ the filler } under a vacuum to remove air and causing the filler to replace the air inside the exterior tubing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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