Are you ready to take your 3D viewing experience to the next level? Opening multiple models in a 3D viewer can give you a more dynamic and interactive visualization. Here's how you can do it:

1. Choose a 3D Viewer: The first step is to select a 3D viewer that supports opening multiple models simultaneously. Look for a viewer that has this feature built-in or supports plugins or extensions for multi-model viewing.

2. Import or Upload Models: Once you have the 3D viewer of your choice, you can start importing or uploading the models you want to view. Most 3D viewers allow you to import models from various file formats such as .obj, .fbx, .stl, and more.

3. Arrange and Position Models: After importing the models, you can arrange and position them within the 3D viewer. Some viewers allow you to drag and drop models into the desired positions, while others may require you to specify the coordinates or use a specific interface to arrange the models.

4. Explore Interaction Options: With multiple models open, you can explore various interaction options provided by the 3D viewer. This may include the ability to toggle between different models, adjust transparency, rotate and scale individual models, and more.

5. Utilize Cross-References: If you're working with related models or assemblies, some 3D viewers offer cross-referencing capabilities that allow you to highlight connections or dependencies between the different models.

6. Take Advantage of Collaboration Features: If you're using the multi-model 3D viewer for collaboration purposes, make sure to explore features that enable real-time sharing and annotations with others.

By opening multiple models in a 3D viewer, you can gain a better understanding of spatial relationships, visualize complex assemblies, and enhance your overall viewing experience. Whether you're an architect, engineer, designer, or simply a 3D enthusiast, this feature can bring a new level of depth and insight to your projects. So, go ahead, experiment, and enjoy the enhanced visual experience with your multi-model 3D viewer!