A mold is cut in the form which is filled with {HEAD ~ compensating material} for forming {TAIL ~ the filter} 
for forming
A mold is cut in the form which is filled with { HEAD ~ compensating material } for forming { TAIL ~ the filter }
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