Alpine Mold on Instagram: "What is a Slider + Lifter structure in injection molds? A Slider + Lifter structure is a combined side-action mechanism used in injection molds to release complex undercuts that cannot be handled by a single slider or lifter alone. How does it work? • The slider retracts first to release side undercuts • Clearance is designed inside the slider (not simply hollowed) • During ejection, the lifter moves along its angle to release hidden or bottom undercuts The key is clea