How Do You Fill a Cavity in SolidWorks?

Are you looking to fill a cavity in SolidWorks? This tutorial will guide you through the process step by step. Let’s get started!

Step 1: Open the Part

To begin, open the part in SolidWorks that contains the cavity you want to fill. This can be an existing part or a new one that you create specifically for this purpose.

Step 2: Activate the ‘Fill’ Tool

In the toolbar at the top of the screen, locate and click on the ‘Fill’ tool. This tool is represented by an icon with a bucket pouring liquid into a shape.

Step 3: Select the Cavity

With the ‘Fill’ tool activated, click on the edges of the cavity to select it. SolidWorks will automatically detect and highlight the boundaries of the cavity for you.

Step 4: Adjust Fill Parameters

Once you have selected the cavity, a dialog box will appear with various parameters that allow you to customize how SolidWorks fills it. Here are some key parameters:

  • Type: Choose between solid and surface fill options depending on your specific requirements.
  • Thickness: Specify how thick or thin you want the filled area to be.
  • Boundary Treatment: Select how SolidWorks should handle boundaries and intersections within the filled area.

Take your time to adjust these parameters according to your design needs. You can preview changes in real-time before finalizing them.

Step 5: Apply Fill

Once you are satisfied with your parameter adjustments, click on the ‘Apply’ button to fill the selected cavity. SolidWorks will instantly generate the fill based on your settings.

Step 6: Review and Modify

After applying the fill, take a moment to review the result. If you are not entirely happy with it, you can easily modify the fill parameters by double-clicking on the filled area or by accessing the ‘Fill’ tool again.

Step 7: Save Your Work

Once you are satisfied with the filled cavity, don’t forget to save your work. Use the ‘Save’ option in SolidWorks or press Ctrl+S to save the part with the filled cavity.


Filling a cavity in SolidWorks is a straightforward process that can be done in just a few simple steps. By using the ‘Fill’ tool and adjusting relevant parameters, you can create fills that meet your design requirements.

Remember to save your work regularly to avoid losing any progress. Happy designing!