| Possible Cause |
Possible Solution |
| Mold fill is too slow. |
Increase injection pressure.
Increase
gate size.
Increase injection speed.
Increase melt temperature.. |
| Mold function is incorrect. |
Make sure venting is adequate.
Increase mold temperature.
Do not use mold lubricants.
Clean cavity surfaces. |
| Part design is incorrect. |
Reduce abrupt changes in section thicknesses.
Avoid ribbing that is too thick. |
|
|
