If you're looking to open an OBJ file in SolidWorks, you're in the right place. SolidWorks is a powerful 3D modeling and CAD software widely used in the engineering and design industry. While SolidWorks primarily uses its native file format, such as .sldprt for parts and .sldasm for assemblies, it is possible to import and open OBJ files with a few simple steps. Here's how to do it:

1. Launch SolidWorks and open a new or existing project.

2. Navigate to 'File' and select 'Open' from the dropdown menu.

3. In the file dialog box, change the file type to 'OBJ files (*.obj)' from the dropdown menu.

4. Locate and select the OBJ file you want to open, then click 'Open' to import it into SolidWorks.

5. SolidWorks will prompt you with options to adjust the import settings, such as units, tessellation, and coordinate systems. Make sure to review and modify these settings as needed before proceeding.

6. Once you've configured the import settings, click 'OK' to finalize the import process.

7. The OBJ file will now be imported and opened in SolidWorks, allowing you to view, edit, and work with the 3D model as you would with any other SolidWorks file.

It's important to note that while SolidWorks can import OBJ files, the compatibility and accuracy of the imported geometry may vary based on the complexity and original source of the OBJ file. You may need to perform additional cleanup, repairs, or modifications to the imported model to ensure it meets your design requirements.

In conclusion, opening an OBJ file in SolidWorks is a straightforward process that expands the software's capabilities for working with diverse 3D file formats. Whether you're collaborating with partners using different software or incorporating existing OBJ models into your SolidWorks projects, knowing how to import and open OBJ files is a valuable skill for any SolidWorks user.