Opening OBJ files in SolidWorks is a straightforward process that allows you to import 3D models from various sources and use them in your designs. Here's a simple guide to help you get started:

1. Launch SolidWorks and create a new part or assembly document.

2. Go to File > Open and select the OBJ file you want to import.

3. In the Open dialog box, choose 'Obj Files' from the 'Files of type' drop-down menu to filter for OBJ files.

4. Select the OBJ file and click 'Open' to import it into your SolidWorks workspace.

5. SolidWorks will prompt you to set the units and options for the imported OBJ file. Make sure to select the appropriate units and settings based on the original OBJ file.

6. Once the OBJ file is imported, you can use SolidWorks' powerful 3D modeling tools to modify, analyze, and enhance the imported geometry as needed.

7. Save your work regularly to ensure that your progress is not lost.

By following these steps, you can seamlessly open and work with OBJ files in SolidWorks, enabling you to incorporate 3D models from a wide range of sources into your design projects. Whether you're collaborating with other designers, working with 3D scan data, or exploring new design concepts, the ability to import OBJ files expands the possibilities for your SolidWorks projects.