How Much Re-Training…

Yesterday, I received a question I get asked all the time… Jason Should I do any re-training of my employees? My Response We recommend regular retraining of your employees for two reasons… 1) Each time someone takes the training, they will pick up, learn, or understand something new. 2) Retraining also ensures they do not lose track of the fundamentals, which can […]

Open-Loop and Closed-Loop Process Sheets…

I was recently at a customer with both open-loop and closed-loop molding machines… BD Can a standard, machine-independent, process sheet be used for all our molding machines? My Response In this case, the best way to process an open-loop machine is much different than a closed-loop molding machine. An open-loop machine should be full at […]

Volumetric or Gravimetric Feeder?

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Avoiding Check Ring Leakage…

I was recently asked this question… Joe How do I avoid check ring leakage? My Response Many heated discussions have arisen as a result of check ring leakage, but the simple fact is: All check rings allow some plastic back-flow (leakage). There are specialized products on the market which try to eliminate check ring leakage, but they eventually cause excessive barrel wear… resulting […]

Selecting a Part Weighing Scale…

I was recently asked this question about weighing parts… TC If I am weighing and documenting part weight for process documentation, what scale should I use? My Response The accuracy of a scale must be +/- tenth of a percent of the total part weight or better. For example, if you are weighing a 100+ […]