The molding of golf balls is accomplished through a process called insert molding. The golf ball core is inserted into the mold and positioned precisely in the center; whereas, the plastic injection will form a cover around the core. Therefore, critical to molding golf balls, then is the method of actuating the core holding pins.

There are two general methods for actuating the core holding pins. Our original design has twin hydraulic cylinders on each side of the mold. When actuated, the cylinders pull and push the core pin plate against stop buttons that are preset to a given core size. We call this a "Cylinder Style" mold. Our latest design uses a single hydraulic cylinder that pushes and pulls a wedge mechanism against adjustable stops, which in turn drives the core pin plate. We call this a "Wedge Style" mold. While we can build each style mold equally well, there are distinct differences between them.

The "Wedge Style" mold provides a very stable platform to keep all the core pins level and movement parallel. Additionally this design allows extended and retracted core pin adjustment while the mold is mounted in the press.

All of Hye Precision's injection mold bases are custom designed and built from 420 stainless steel and heat treated to improve the corrosion resistance and durability.