How Do You Make Molds in SolidWorks?

In this tutorial, we will learn how to create molds in SolidWorks. Molds are essential for manufacturing processes as they help in reproducing complex shapes accurately and efficiently. SolidWorks provides a comprehensive set of tools that enable users to design molds with precision.

Step 1: Creating the Mold Base

To begin, open SolidWorks and create a new part file. Start by sketching the outline of the mold base using the Line tool or any other appropriate sketching tool.

Once you have sketched the outline, use the Extrude tool to give it thickness. Specify the desired value for the thickness in the Extrude Property Manager.

Step 2: Adding Cavities

Next, we need to add cavities to our mold base. These cavities will define the shape of our final product.

To add a cavity, select one of the faces of your mold base and create a sketch on it using appropriate sketching tools like lines, arcs, or splines. Then, use the Extrude Cut or Boss tool to remove material from your mold base based on this sketch.

You can also use features like Fillets or Chamfers to add finishing touches to your cavities and ensure smooth transitions between different surfaces.

Step 3: Creating Inserts

In some cases, you may need inserts in your mold design for adding additional features or creating complex geometries. To create an insert, follow similar steps as adding cavities but focus on smaller areas within your mold base.


It is recommended to group each insert separately so that they can be easily modified or replaced if required.

Step 4: Incorporating Cooling Channels

Cooling channels are crucial for efficient manufacturing processes. They help in maintaining consistent temperatures within the mold, which is important for achieving high-quality products and reducing cycle times.

To incorporate cooling channels, sketch the desired path using appropriate sketching tools. Then, use the Swept Cut or Boss tool to create the channels. Make sure to specify the desired diameter and depth of each channel in the Property Manager.

Step 5: Finalizing the Mold Design

Once you have added all the necessary features to your mold design, it’s time to finalize it by adding finishing details like parting lines, ejector pins, and venting systems.

Use appropriate sketches and features to define parting lines that separate different halves of your mold. Ejector pins can be added using features like Hole Wizard or by creating custom sketches and extruding them. Venting systems can also be created using similar techniques.

Step 6: Checking for Interferences

Before finalizing your mold design, it’s crucial to check for any interferences or collisions between different components of the mold. SolidWorks provides various tools like Interference Detection and Collision Detection that can help you identify and resolve such issues.

  • Interference Detection: This tool allows you to check for interferences between solid bodies or individual components within your mold design.
  • Collision Detection: This tool helps you identify any physical collisions that may occur during the manufacturing process due to improper clearances or overlapping components.

Step 7: Creating Mold Drawings

Once you are satisfied with your mold design, it’s time to create detailed drawings that can be used by manufacturers for manufacturing purposes. SolidWorks provides powerful drawing tools that allow you to create accurate and detailed mold drawings.

Start by creating a new drawing file and insert views of your mold design. Use appropriate annotations, dimensions, and symbols to convey all the necessary information required for manufacturing.

Remember: It’s important to provide clear and concise instructions in your mold drawings to ensure accurate reproduction of your design.


In this tutorial, we have explored the process of creating molds in SolidWorks. We started by creating the mold base and then proceeded to add cavities, inserts, cooling channels, finishing details, and checked for interferences. Finally, we learned how to create detailed mold drawings for manufacturing purposes.

SolidWorks provides a wide range of powerful tools that make mold design an efficient and precise process. By following these steps and utilizing the various features offered by SolidWorks, you can create molds that meet your specific requirements with ease.