1. Optimize Part Design

Design for manufacturability (DFM) is crucial for cost reduction. Simplify geometries, maintain uniform wall thickness, and minimize undercuts.

Work with your mold maker early in the design process to identify cost-saving opportunities before tooling begins.

DFM Best Practices

• Uniform wall thickness (prevents warping and sink marks)
• Generous radii on corners (reduces stress concentrations)
• Minimal undercuts (simplifies mold design)
• Standard hole sizes (reduces tooling complexity)

2. Select Appropriate Materials

Choose materials that meet performance requirements without over-specifying. Consider recycled materials where applicable for non-critical applications.

Material Cost-Saving Strategies

• Use commodity resins instead of engineering grades when possible
• Consider regrind content for non-visible parts
• Buy in bulk for volume discounts
• Establish long-term supplier relationships

3. Optimize Mold Design

Invest in a well-designed mold with appropriate cavity count. The right mold design pays dividends throughout production life.

Mold Design Considerations

4. Improve Production Efficiency

Reduce cycle times through optimized processing parameters. Every second saved adds up over thousands of cycles.

Efficiency Improvement Methods

• Optimize injection speed and pressure
• Reduce cooling time with efficient channel design
• Implement automated part removal
• Train operators on best practices

5. Reduce Waste and Scrap

Implement quality control at each production stage. Preventing defects is far cheaper than fixing them.

Waste Reduction Strategies

Conclusion

Cost reduction in injection molding is achievable through careful planning, design optimization, and efficient production practices.