How to merge smaller meshes into one large mesh

1. Choose Mesh > Mesh Partitioning > Mesh Merge from the tool palette.
2. Select two or more meshes.
3. Press the Merge button in the lower right corner of the window.

   The selected meshes are combined into a single mesh object.

   Note

   You can continue to select meshes then press Merge until you choose another continuous tool.

The normals are preserved. This is the recommended behavior for visualization purposes as it ensures a more accurate shading of the model.

To merge all coincident vertices, use Mesh > Mesh Cleanup > Mesh Weld Vertices.