Alternatively, a plurality of locator pins 11, in FIG 1, may center and support the inner core within the mold 16 by their being appropriately spaced and of an approximate length equal to {HEAD ~ the diameter} of {TAIL ~ the outer core mold} 
of
Alternatively , a plurality of locator pins 11 , in FIG 1 , may center and support the inner core within the mold 16 by their being appropriately spaced and of an approximate length equal to { HEAD ~ the diameter } of { TAIL ~ the outer core mold }
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 HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL