How to determine the optimal filling control with runners?
Selecting the correct injection time can be critical for avoiding short shots and preventing quality issues like burn marks.
I typically use Molding Window to establish my part-only injection time. I would then run an actual Filling analysis to verify my injection time.
Once I add a runner system, I can’t use the same injection time since I have added additional plastic volume to the system. Assuming my part-only Filling analysis looks acceptable, I would then go to the log file and look at the calculated flow rate. This flow rate will become my new filling control with my part + runner model.
How do you determine the optimal filling control with runners?
![You can see one window that shows the initial number of threads used in the analysis and another window that shows the Fill+Pack Settings.](https://dev03.bauerguse.de/wp-content/uploads/2022/10/Flow-Rate-with-Runners-1024x572.jpg)