Exporting low-poly OBJs from Rhino to ZBrush allows for a smooth transition between the two 3D modeling software, enabling improved workflow and detailing. To achieve this, follow these steps:

1. Start by modeling your low-poly object in Rhino, ensuring that the polygon count is kept as low as possible while retaining the desired shape and form. This is crucial for optimizing performance in ZBrush.

2. Once the modeling is complete, navigate to the 'File' menu in Rhino and select 'Export Selected' to save the low-poly object as an OBJ file. Make sure to adjust the export settings to maintain the low-poly nature of the object.

3. Open ZBrush and import the exported OBJ file. Upon import, ZBrush will recognize the low-poly nature of the object, allowing for easy detailing and sculpting without encountering performance issues.

4. With the low-poly object now in ZBrush, you can start adding finer details, sculpting, and refining the model to your liking. The low-poly base provides a solid foundation for intricate detailing.

5. Once the detailing process is complete, you can export the high-quality sculpt from ZBrush back to Rhino for final adjustments or further integration into your project.

By following these steps, you can efficiently export low-poly OBJs from Rhino to ZBrush, ensuring a seamless transition and improved workflow. This method allows for the optimization of performance in ZBrush while maintaining the integrity of the low-poly model created in Rhino. Whether you are working on game assets, 3D printing projects, or digital artwork, mastering this workflow can significantly enhance your 3D modeling process.