Cavity cooling rate drives polyamide skin-core spherulitic growth, setting local crystalline phase balance, volumetric shrinkage, and achievable DIN 16742 tolerances.
Sub-millimetre core pin survivability requires DLC coatings, controlled thermal expansion stack-ups, and force-monitored ejection to prevent buckling and galling.
Side-viewing prisms and polarized optical coherence gating extend sidewall slope scanning limits beyond eighty-five degrees in deep tooling cavities.
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