Moving cores and undercuts in injection molds
| Parameter | Recommendation |
|---|---|
| Max Angle | 10-15 deg (lifter), 20-25 deg (slider) |
| Lifter Return | Always use spring return + positive stop |
| Slider Wear Plate | Bronze/graphite or oil-impregnated, 3-5mm thick |
| Core Pull Force | P = area x shrinkage pressure x friction |