up and away from lower mold slide section 70 mold slide section 70 is free under spring urging to move away from the molded pattern p next the operator grasps handle 53 h and at the same time opens air handle valve 53 v fig1 causing air to flow out lower mold bottom holes 76 providing an air cushion between the lower mold bottom surface 74 and the press table surface s lower mold section 53 is then pulled with ease on air cushion by the operator in direction d fig1 as lower mold section 53 moves toward stop piece 65 lower mold plate 63 is lifted due to the camming action of cross bar 59 with its stud ends 60 61 as such stud ends 60 61 are cammed upwardly in guide slots 68 68 b 69 a 69 b and 71 a 71 b causing core unit 88 to rise up fig1 a the sprue not shown is severed as core unit 88 rises when stud ends 60 61 reach the ends of slots 69 a 69 b they drop down through recesses 87 a 87 b under action of spring loaded plate 63 stud ends 60 61 are then free to move under slots 71 a 71 b as mold section 53 is pushed by the operator back to its position for mating with upper mold 52 core unit 88 having been raised by plate 63 is then readily grasped by the operator for removal as core unit 88 is extracted the injection sprue is sheared off lubricant or cold air may be sprayed on the hosel pin 58 to.