Quick diagnostic reference for common injection defects
| Defect | Check First | Then Check |
|---|---|---|
| Short Shot | Material feed empty? | Injection stroke, nozzle temp |
| Flash | Clamp force enough? | Injection pressure, vents |
| Sink Mark | Hold pressure/time | Gate size, cooling |
| Burn Mark | Venting OK? | Injection speed |
| Splay | Material dried? | Barrel temp, RPM |
| Warpage | Cooling time? | Mold temp balance |