Broken Molds Are the Worst! 3 Wear-Parts Cause Most Problems. 1.Ejector pins: They push parts daily, so they loosen over time. 2.Sliders: Back-and-forth movement widens gaps, causing material leaks! 3.Guide pins & sleeves: Tight fits mean too much friction, the accuracy will decrease.Don’t wait till they’re totally broken to fix them! Check these parts regularly.




















