If you're a 3D artist or designer looking for high-quality 3D models for your projects, you'll be happy to know that there are several websites that offer free 3D model downloads. Whether you're looking for character models, props, environments, or textures, these websites have a wide range of assets available for use in your projects. Here are the top 10 websites where you can find free 3D models for download:

1. TurboSquid: TurboSquid is one of the largest and most popular marketplaces for 3D models, and they offer a selection of free models for download.

2. Sketchfab: Sketchfab is a platform for sharing and downloading 3D models, and they have a section dedicated to free models that you can use in your projects.

3. CGTrader: CGTrader is another popular marketplace for 3D models, and they offer a variety of free models for download.

4. Free3D: As the name suggests, Free3D is a website that offers a large collection of free 3D models for download.

5. GrabCAD: GrabCAD is a community of engineers and designers, and they offer a library of free 3D models and CAD files.

6. Clara.io: Clara.io is a web-based 3D modeling and rendering tool that also offers a selection of free 3D models for download.

7. 3D Warehouse: 3D Warehouse is a platform by SketchUp where you can find a variety of free 3D models created by the community.

8. NASA 3D Resources: NASA offers a selection of 3D models and resources for download, including models of spacecraft, satellites, and planets.

9. Blend Swap: Blend Swap is a community of Blender users who share and download 3D models, and they have a section dedicated to free models.

10. Cults 3D: Cults 3D is a platform for sharing and downloading 3D printable models, and they also offer a selection of free 3D models for download.

These websites offer a wide range of 3D models, including characters, vehicles, architecture, and more. Whether you're a beginner or a seasoned pro, you're sure to find something useful for your projects on these websites. Happy downloading!