Because {HEAD ~ the cavity} is pressurized during {TAIL ~ the method} of the present invention, the escaping air prevents a burr from forming internally by pushing the molten material back through the hole 
is pressurized during
Because { HEAD ~ the cavity } is pressurized during { TAIL ~ the method } of the present invention , the escaping air prevents a burr from forming internally by pushing the molten material back through the hole
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH