Jerry Zou is a CKMOLD technical content contributor and project contact. His editorial scope covers injection mold manufacturing, plastic-part design for manufacturability, material selection, tooling cost, mold trials, production handoff and troubleshooting for international product and sourcing teams.
Editorial responsibility
Jerry’s articles are intended to help product engineers, procurement managers and hardware teams define the information needed before a molding or tooling decision. Technical ranges are presented as starting points and should be checked against the exact resin grade, part geometry, mold, machine and end-use requirements.
Topics covered
- Injection-molded part DFM and CAD release requirements
- Injection mold design, trials, validation and transfer
- Plastic material selection and processing constraints
- Tooling budgets, RFQ preparation and supplier evaluation
- Defect diagnosis and production handoff controls
Evidence and disclosure approach
Regulatory, safety and material-performance claims should be linked to primary sources where available. Hypothetical calculations and illustrative engineering scenarios are labeled as such. No unnamed customer result, reviewer credential or project performance claim should be treated as verified evidence.
Company information
For verified company details, certificate scope and project responsibilities, see About CKMOLD. To discuss a part, use the project review form; CAD files can be emailed directly to jerry@ckmold.com.
Articles by Jerry Zou
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How Processing Parameters Affect Injection Mold Shrinkage
Explore how packing, mold temperature, melt temperature, cooling time and injection speed affect injection mold shrinkage and dimensional control.
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Troubleshooting Injection Mold Shrinkage and Dimensional Issues
Troubleshoot injection mold shrinkage when calculated values do not match real parts, using process data, measurement control and tool review.
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Applying Shrinkage Calculations in Real Mold Design Examples
Practical shrinkage calculation examples for real mold design, including ribs, bosses, holes, tolerance bias and steel-safe correction planning.
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Injection Molding Shrinkage Rate Data: How to Use It Correctly
Learn how to use injection molding shrinkage rate data correctly, compare material databases and avoid costly mold sizing mistakes.
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Injection Mold Shrinkage Calculation: A Practical Step-by-Step Method
A practical injection mold shrinkage calculation method covering resin data, flow direction, critical dimensions, tooling allowance and trial validation.
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Injection Mold Shrinkage Compensation: Why Accuracy Matters
Understand why injection mold shrinkage compensation is critical for dimensional accuracy, assembly fit, tool approval and long-term production stability.
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Precision Locating Rings for Complex Injection Mold Projects
See how precision locating rings support complex injection mold alignment, hot runner protection, multi-cavity balance and repeatable mold setup.
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Automotive Injection Molding Locating Ring Requirements
Learn automotive injection molding locating ring requirements for mold alignment, repeatability, safety checks and production-ready tooling.
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Locating Rings for High-Speed Injection Molding: Alignment and Setup Control
Explore locating ring requirements for high-speed injection molding, including setup repeatability, nozzle alignment, wear, automation and mold change control.
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How to Select the Right Locating Ring for Injection Molding Applications
Learn how to select the right locating ring for injection molding applications, including machine fit, mold size, resin, temperature and export standards.
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How to Install Injection Mold Locating Rings Correctly
Step-by-step guidance for installing injection mold locating rings, including machine fit, screws, sprue alignment, safety checks and validation.
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Locating Ring Tolerances and Their Impact on Injection Mold Alignment
Understand locating ring tolerances, injection mold alignment, nozzle fit, platen centering, setup repeatability and quality risks.