📅 2013-Oct-22 ⬩ ✍️ Ashwin Nanjappa ⬩ 🏷️ blender, mesh, non-manifold ⬩ 📚 Archive

Some mesh operations cannot be performed in **Blender** if the mesh is **non-manifold**. To view the non-manifold elements of the mesh:

Switch to

`Edit Mode`

. The number of non-manifold elements in the mesh can be seen at the top where the number of vertices, edges and faces is displayed. For example, a non-manifold mesh of 14 faces, where 2 faces are non-manifold would be shown as`Fa:2-14`

.Strangely, Blender only displays and selects the non-manifold elements in Vertex or Edge select modes. It does not work in Face select mode. So, choose either the

`Vertex select mode`

or the`Edge select mode`

. Next, choose Select > Non Manifold. You can also do this by pressing`Shift-Ctrl-Alt-M`

. The non-manifold vertices or edges are now displayed in orange and are selected for use in further operations.

**Tried with:** Blender 2.62 and Ubuntu 12.04 LTS