Tag Archives: shot

Eliminating Initial Shot Uncertainties

At one point or another, we have all been in the position of standing beside the molding machine with a new mold hung in the press and it’s time to make that first shot. The process technician or engineer builds up a shot size and away it goes. As the screw moves forward, everybody is holding their breath wondering if too much or too little plastic was injected. Is the mold going to flash (Figure 1)? Will the parts come out of the mold? What if something else breaks and the mold must be pulled after only one shot?

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