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John Bozzelli Founder
How to Solve Uneven Clamping
Of the hundreds of variables involved in injection molding, clamping mechanisms and platens often get less attention than they deserve.
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Find the Source of Visual Defects
The appearance of visual defects on parts such as cracking, crazing, grooves, ripples, wave marks, and flaky brittleness often indicates more than an aesthetic problem.
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What to Do About Weak Weld Lines
Weld or knit lines are perhaps the most common and difficult injection molding defect to eliminate.
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Sticking Sprues or Parts? Lots of Possible Causes and Solutions
Material sticking in the mold can be a production killer, whether it is the sprue or the formed part in the cavity.
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Eliminate Blemishes on Cosmetic Parts
Black specks, streaks, or poor color mixing are the most common problems that mar the appearance of cosmetic injection molded parts.
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How to Stop Flash
Flashing of a part can occur for several reasons—from variations in the process or material to tooling trouble.
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