Cooling of small diameter core pin was a major challenge for die caster. The developments in the last decade have made it possible now. Advantages of Core Pin Cooling : During high pressure die casting of Aluminium alloys, generally there are three defects that are confronted by die casters on or around core pins: SolderingShrinkage porosity around core pinsWash out Cooling of core pins results in minimization of the defects. This process also improves the life of a core pin used in casting process.