It looks like I am going with two full internal tapers , .218 for PVC's and .187 for TPE's and a reverse taper of .187 for Nylon. My sprue bushings range from .139 to .222 , I was thinking of having them all opened up to either .225 or .230 to accomidate PVC , what do you guys suggest? Also , as I am new to all the mechanics behind this , is there anything I should keep in mind when I have our mold guy do this?
