Hey, tech enthusiasts! Want to up your 3D modeling game on Windows 10? Let's dive into how to use the 3D Viewer app! First, make sure you have Windows 10 Creators Update or later. Then, simply open the 3D Viewer app by searching for it in the Start menu. Now, you can open 3D models and objects in .fbx, .3mf, .ply, .obj, or .stl formats. Just click 'Open' and select your 3D file. Once it's loaded, you can manipulate the 3D object using your mouse and keyboard. Try zooming in and out, rotating, or scaling the model to get a better look. You can also go to 'File' -> 'Save As' to export the 3D model in various formats. And that's it! You're all set to explore, view, and interact with 3D objects in Windows 10 using 3D Viewer. Happy modeling!