How Do You Convert an Imported Surface to a Solid in SolidWorks?

In SolidWorks, it is often necessary to convert imported surface geometry into solid bodies for further design and manufacturing purposes. Converting a surface to a solid in SolidWorks can be accomplished using a few different methods, depending on the complexity of the imported geometry and the desired end result.

Method 1: Using the Knit Surface Feature

If you have imported surface geometry that consists of multiple surfaces or faces, the Knit Surface feature can be used to combine them into a single solid body.

  • Select all the surface bodies that you want to convert into a solid. You can do this by Ctrl + Clicking on each surface body in the graphics area or by Ctrl + A to select all surfaces in the feature manager tree.
  • Right-click on one of the selected surface bodies and choose Knit Surface.

    The Knit Surface PropertyManager will appear.

  • In the Knit Surface PropertyManager, make sure that “Create solid” is checked. Adjust any other settings if necessary.
  • Click OK. The selected surfaces will be knitted together into a single solid body.

Method 2: Using the Thicken Feature

If you have imported surface geometry that consists of a single closed loop or contour, you can use the Thicken feature to give thickness to that contour and create a solid body.

  • Select the contour or loop that you want to thicken. You can do this by clicking on it in the graphics area or by selecting it in the feature manager tree.
  • Right-click on the selected contour and choose Thicken.

    The Thicken PropertyManager will appear.

  • In the Thicken PropertyManager, specify the desired thickness value and direction. The selected contour will be thickened to create a solid body.

Method 3: Using the Offset Surface Feature

If you have imported surface geometry that represents a thin-walled structure, such as a sheet metal part, you can use the Offset Surface feature to create a solid body with a specified thickness.

  • Select the surface that you want to offset.
  • Right-click on the selected surface and choose Offset Surface.

    The Offset Surface PropertyManager will appear.

  • In the Offset Surface PropertyManager, specify the desired offset distance and direction. The selected surface will be offset to create a solid body with thickness.

Tips for Successful Conversion:

  • Check for gaps or overlaps: Before converting surfaces to solids, it is important to ensure that there are no gaps or overlaps between them. Use tools like Trim Surface or Extend Surface to clean up any unwanted geometry.
  • Avoid self-intersecting surfaces: If your imported surface geometry contains self-intersecting surfaces, SolidWorks may have difficulty converting them into solids. In such cases, you may need to manually modify the surfaces or break them down into smaller sections.
  • Consider rebuilding surfaces: If your imported surface geometry is overly complex or poorly defined, it may be beneficial to rebuild the surfaces using SolidWorks’ surfacing tools before attempting to convert them into solids.

By using the appropriate methods and following these tips, you can successfully convert imported surface geometry into solid bodies in SolidWorks. This will allow you to perform further design modifications, simulations, and create manufacturing-ready models.