More specifically, the welded unit may be placed in the two part mold, wherein mould {HEAD ~ half A} has {TAIL ~ a smooth mold surface} and mould half B has a smooth mold surface with one or more perpendicularly protruding cylinders that are adapted to concentrically fit within the flexible membrane through holes associated with plate #1 and plate #2 
More specifically , the welded unit may be placed in the two part mold , wherein mould { HEAD ~ half A } has { TAIL ~ a smooth mold surface } and mould half B has a smooth mold surface with one or more perpendicularly protruding cylinders that are adapted to concentrically fit within the flexible membrane through holes associated with plate # 1 and plate # 2
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH