How Do I Use Mold Tools in SolidWorks?

Are you looking to master the use of mold tools in SolidWorks? Look no further! In this comprehensive tutorial, we will guide you through the process of using mold tools to create complex designs and ensure your parts are manufacturable.

The Basics of Mold Tools

SolidWorks provides a set of powerful mold design tools that enable you to create injection molds for plastic parts. These tools allow you to easily design and analyze the mold components, ensuring that your parts meet the required specifications.

Creating a Mold Base

To start creating a mold in SolidWorks, you first need to create a mold base. The mold base acts as the foundation for your mold design and holds all other components together.

To create a mold base, navigate to the “Insert” menu, select “Mold”, and choose “Mold Base”. You can then specify the size and shape of your mold base using the options available in the property manager.

Adding Cavity and Core

The next step is to add cavities and cores to your mold base. Cavities are used to form the outer surface of your part, while cores create internal features. These components are crucial in achieving the desired part geometry.

To add cavities and cores, go to “Insert”, select “Mold”, and choose either “Cavity” or “Core”. You can then select surfaces or sketches that define these components. Make sure to position them accurately within the mold base.

Advanced Mold Tools

In addition to basic cavity and core creation, SolidWorks offers advanced mold tools that enhance your design capabilities. Let’s explore some of these tools:

Parting Line

  • Create Parting Line: This tool allows you to define the parting line, which separates the mold into two halves. It is essential to ensure proper part ejection and avoid undercuts.
  • Split: The split tool enables you to split the mold along the parting line, creating separate bodies for each half. This is useful for applying different materials or textures to different mold components.

Draft Analysis

Draft analysis is a crucial step in mold design as it ensures that your parts can be easily ejected from the mold without getting stuck. SolidWorks provides a powerful draft analysis tool that helps you identify areas where draft angles are insufficient.

To perform a draft analysis, go to “Evaluate”, select “Draft Analysis”, and specify the draft angle requirements. SolidWorks will then analyze your part and highlight any regions that do not meet the specified criteria.

Mold Flow Analysis

Another valuable tool in SolidWorks is the Mold Flow Analysis. This tool allows you to simulate how molten plastic will flow into your mold, helping you detect potential issues such as air traps or excessive pressure areas.

To perform a Mold Flow Analysis, navigate to “Tools”, select “Xpress Products”, and choose “MoldflowXpress”. Follow the prompts to set up your analysis and interpret the results to make informed design decisions.


Using mold tools in SolidWorks can significantly streamline your mold design process and ensure manufacturability of your parts. By following this tutorial, you have learned how to create a mold base, add cavities and cores, utilize advanced tools like parting lines, draft analysis, and Mold Flow Analysis.

Now it’s time for you to put this knowledge into practice! Start exploring the mold tools in SolidWorks and unleash your creativity in designing complex molds for plastic parts.