Injection-Molded Parts - Custom Plastic Injection Molding | High Precision Parts & Mold Design

Uneven Shrinkage in Injection Molded Parts: The 4 Root Causes, Design Fixes, and Process Parameters That Control Warpage

Warped injection molded part measured with feeler gauge showing 0.35mm deviation on granite surface plate A 96 mm × 64 mm ABS connector cover passed dimensional inspection at the mold trial. Forty-eight hours later, the same part measured 0.42 mm out of…

Alex Yu

Aug 21 2026

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Draft Angle & Wall Thickness Guidelines for Injection Molded Parts

Draft Angle & Wall Thickness Guidelines for Injection Molded Parts Optimizing Design for Manufacturability, Quality, and Cost Efficiency When designing plastic parts for injection molding, two critical geometric parameters—draft angle and wall thickness—directly impact moldability, part quality, cycle time, and tooling longevity.…

Alex Yu

Feb 24 2026

No More Cracks in Injection-Molded Parts — Here’s Why They Happen (and How to...

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Keine Risse mehr in Spritzgussteilen - Hier erfahren Sie, warum sie entstehen (und wie Sie sie beheben können!)

Cracking in injection-molded parts[^1]—whether visible as fine surface crazing, micro-cracks, ejection whitening, full fractures, or damage caused by sticking to the mold (e.g., part or runner adhesion)—can severely compromise product quality and reliability. Cracks may appear immediately after demolding (demolding cracks) or…

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