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Real mold cavity photo from Wikimedia Commons for mold design article — Real image source: Wikimedia Commons, “Mold cavity”, by Blue tooth7, licensed CC BY-SA 3.0. Used as a real reference image for mold cavity, parting, venting and maintenance checks.

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A mold plan should be manufacturable, stable in production and easy to maintain.

Practical checks

Review projection direction, deep cavities, cosmetic surfaces and draft angle first. Straight pull structures usually reduce cost and maintenance risk.

Engineering review

Venting removes air and gases from the cavity, reducing burn marks, short shots, weak weld lines and local high pressure.

Discussion

Deep narrow cavities, sharp corners and polishing blind areas increase machining difficulty. Wear areas should be replaceable inserts when possible.

References: Protolabs Xometry Plastics Technology MoldMaking Technology
Content is rewritten and summarized from public sources; images are site-owned process illustrations.

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