an apparatus and method for molding plastic materials is provided comprising a mold having a first mold section and a second mold section with a mold cavity disposed in between . a first gate design is provided by at least one first gate design mold member , 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 to change from the first gate design to the second gate design .