Cores are preformed sand shapes inserted into the mold to produce interior and exterior features in the casting.

ME Elecmetal foundry engineers use 19 cores in the mold for the track shoe. 

• The two large body cores form the center cavities in the shoe.  

• The smaller cores form the pin lugs with their holes and  the surface features on the shoe.

• The cores use a total of 700 lbs of zircon core sand.