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+ […]

Controlling Warpage

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Dryer Capacity Calculation

I was just asked… JW What factors should I take into account when calculating the capacity of a new dryer system? My Response When calculating the capacity of a dryer system you need to determine your total dried material consumption. Your dried material consumption can be calculated by multiplying the number of machines by their respective output in […]

Venting Problem

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Sizing up Ejector Pin Diameters

I was asked the question…   Dan “How one will decide the ejector pin diameter to eject the part safely without any stress mark observed on the part?”   My Comments To avoid permanent distortion of the plastic moldings, the number, location, and design of the ejector components must be developed to apply a low […]