once removed parts 44 can be stacked by a conventional stacker unit transported by a conventional conveyor unit or otherwise handled as desired diffuser plate 108 is mounted to the back of body 100 and changes the direction of air travelling through channels 120 through about ninety degrees so that the exhaust air exits retention apparatus 36 in a radial manner as indicated by arrow 152 in fig1 a 3 and 7 this prevents exhaust air from impinging and contaminating the portion of the mold 20 behind tool plate 28 mold half 20a in the example of fig1 and 1a as only a relatively low volume of pressurized air is needed to supply nozzles 132 it is contemplated that a single air supply tube not shown of small diameter can supply an array of retention apparatus 36 as this tube carries a low volume of air at a moderate pressure it can also be appropriately selected to be light flexible and able to withstand the high speeds and fast accelerations and decelerations of the removal tool plate 28 into and out of mold 20 the problems associated with bulky large diameter vacuum hoses employed with prior art system are thus avoided in a present embodiment of the invention the air supply tube is connected to a lightweight distribution manifold not shown on either removal tool plate 28 or arm 32 adjacent removal tool plate 28 and individual air supply tubes extend from to manifold to the inlet 140 of each retention apparatus 36 as mentioned above preferably surfaces 116 are complementary to the portion of part 44 which enters apparatus 36 so that this portion fits snugly within apparatus 36 this serves.