Abstract: A core pin for use in a plastic injection mold for forming a hole through a part as it is formed in the mold. A shaft is longitudinally slidable in one of the base members of the mold and extends through the cavity of the mold and abuts the inner face of the opposing base member. A spring biases the shaft toward the second base member. When the mold is open the shaft has a small amount of positive clearance. When the mold closes the spring is compressed and the shaft has zero clearance against the inner face of the second base member, regardless of dimensional changes of the mold.

Abstract: A mold for use in making decorative marshmallows. A mold body forms a positive male punch mold having an exterior bottom surface of decorative shape. A handle is attached to the body and is upstanding therefrom. The mold is pressed into flour to form impressions in the flour. The impressions are then filled with a marshmallow mixture which sets up forming decorative marshmallows having the shape of the original positive mold.