If you work with 3D modeling, you may come across OBJ files that you want to use in Autodesk Inventor. However, Inventor does not natively support OBJ files, so you will need to convert or import them. Here are the steps to get OBJ file into Inventor:

1. Convert OBJ to DWG or DXF format: Since Inventor is compatible with DWG and DXF formats, you can use a third-party converter to convert the OBJ file into one of these formats. There are many online and offline tools available for this purpose.

2. Import the converted file into Inventor: Once you have the OBJ file converted to DWG or DXF format, you can import it into Inventor. In the 'File' menu, select 'Open' and choose the converted file. Inventor will then import the file and you can start working on it.

3. Use third-party plugins: Another option is to use third-party plugins or add-ons for Inventor that enable the direct import of OBJ files. These plugins are designed to bridge the gap between different file formats and make it easier to work with non-native file types.

4. Consider using Autodesk Fusion 360: If you frequently need to work with OBJ files, you may want to consider using Autodesk Fusion 360 alongside Inventor. Fusion 360 is a powerful 3D modeling software that supports OBJ files natively. Once you have imported the OBJ file into Fusion 360, you can easily transfer it to Inventor for further editing and modeling.

By following these steps, you can get OBJ files into Autodesk Inventor and use them for your 3D modeling projects. Whether you choose to convert the files to DWG or DXF format or use third-party plugins, you have options for working with OBJ files in Inventor. With the increasing popularity of 3D printing and modeling, it's important to be able to work with a variety of file formats, and these steps will help you do just that.