If you're a 3D artist or designer using Zbrush, you may be looking for free OBJ files to incorporate into your projects. Fortunately, there are several websites and communities where you can find high-quality OBJ files for free. Here are some reliable sources to get you started.

1. Thingiverse: Thingiverse is a popular platform for sharing 3D designs, including OBJ files. You can search for specific objects or browse through the collection to find OBJ files that suit your needs.

2. TurboSquid: TurboSquid offers a wide range of 3D models, including OBJ files. While many of the models on TurboSquid are for sale, there is also a selection of free OBJ files available for download.

3. Free3D: Free3D is a community-driven platform where users can share and download 3D models, including OBJ files. You can find a variety of objects and characters to use in your Zbrush projects.

4. Sketchfab: Sketchfab is a great resource for finding 3D models, and many of them are available for free. You can search for OBJ files and filter the results to find free models that are compatible with Zbrush.

5. CGTrader: CGTrader is another marketplace for 3D models, and they also offer a selection of free OBJ files. You can browse through the free models section to find OBJ files that you can use in your Zbrush projects.

6. ZbrushCentral: ZbrushCentral is the official forum for Zbrush users, and it's a great place to connect with other artists and find resources. You can find free OBJ files shared by the community members and participate in discussions about 3D modeling.

These are just a few of the many resources available for finding free Zbrush OBJ files. Keep in mind that while these files are free to download, you should always check the licensing terms to ensure that you can use them in your projects. With a little bit of searching, you can find a wealth of OBJ files to enhance your Zbrush creations without breaking the bank.