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mold trials mass production comparison in injection molding

Why Parts Pass Mold Trials but Fail in Mass Production

Many injection molding projects pass mold trials without issues, only to fail weeks or months into mass production. This article explains why trial success often hides production risks—and how teams can identify draft, cooling, and tolerance issues before tooling release.

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Cross-section photograph of a high-cavity stack mold showing upper and lower cavity layers, middle plate, and hot runner system

High-Cavity, High-Throughput Stack Mold Design: 4 Hidden Challenges

High-cavity and stack mold designs promise high throughput—but they also introduce complex challenges that can derail production if overlooked. Drawing from over 12 years of hands-on experience, this article explores the real-world issues behind runner balance, cavity count scaling, automation reliability, and thermal control in high-throughput stack mold systems.

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