Mold Design for Injection Molding

Course Description

This course provides mold makers, design engineers, and molders with the common language and core knowledge required to successfully design robust injection molds that meet cycle time, cost, part quality, and lead time requirements.

Class topics address good manufacturing practices (GMP) for part design, including fundamental material characteristics, necessary processing techniques, and molding non-conformities, with a focus on robust mold design.

Since hands-on-learning is a core component of our training, we will utilize industry examples as a reference, and then dive directly into evaluating and improving your designs.


Part Design

  • Wall Thickness
  • Draft
  • Radius
  • Undercuts
  • Surface Finish


  • Tolerance
  • Datum’s


  • Melt Flow Index (MFI)
  • Shrink Rate
  • Heat Deflection Temperature


  • Clamp Unit
  • Injection Unit


  • Melt Temperature
  • Flow Rate
  • Pressure Gradient
  • Cooling Rate and Time


  • Line of Draw
  • Steel
  • Coatings
  • Actions
  • Gating
  • Venting
  • Support Pillars
  • Cooling
  • Ejection
  • Instrumentation

Molding Non-Conformities

  • Warp
  • Short Shots
  • Sinks
  • Voids

Design for Manufacturability (DFM)

  • Simulation
  • Mold Design Checklist


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