An apparatus and method for molding plastic materials is provided comprising a mold having a first mold section (12) and a second mold section (14) with a mold cavity (16) disposed in between. A first gate design is provided by at least one first gate design mold member (40), and a second gate design is provided by at least one second gate design mold member. The first and second gate design mold members are removably attachable to, and interchangeable on, at least one of the first or the second mold sections (12, 14) to change from the first gate design to the second gate design.