Beginners make a depth map 3D model by obtaining a depth map, importing it with a 2D image into beginner-friendly 3D software, and refining the resulting mesh.
First, get a depth map—use a LiDAR-enabled device (like iPhone 12+) to capture one, or generate it from a regular image via free tools (e.g., Depthify). Next, import both files into software like Blender or Meshmixer, then use "depth to mesh" or displacement tools to turn depth data into a 3D shape. Finally, refine by adjusting depth intensity, smoothing edges, or adding basic textures.
For practice, try Blender’s Displace Modifier on a flat plane—apply a simple depth map to see how it creates shape, which is low-stakes and great for learning the basics.