===== Repair models =====

==== Repairing a large hole ====

{{en:blender:repairing_mesh.png?direct&800|}}

Due to the resolution error of the medical scanner, a small structure was created that is not part of the actual model. The following shows how this can be removed.

{{en:blender:repairing_mesh_1.png?direct&800|}}

In edit mode, select the superfluous vertices and press the Delete key on the keyboard. Select "Vertices" from the list. Repeat this process until all desired vertices have been deleted.

{{en:blender:repairing_mesh_2.png?direct&800|}}

This creates a hole in the outer surface of the model.

{{en:blender:repairing_mesh_3.png?direct&800|}}

To correct this, switch to edit mode (1) and make sure that edge selection is switched on (2).

{{en:blender:repairing_mesh_4.png?direct&800|}}

Then select the edges around the open hole.

{{en:blender:repairing_mesh_5.png?direct&800|}}

Press F to fill between the selected edges. This also works for small holes created during decimation and other operations.

{{en:blender:repairing_mesh_6.png?direct&800|}}

It is also possible to select "Area" and then "Fill". The hole may then have to be filled piece by piece.

{{en:blender:repairing_mesh_7.png?direct&800|}}

Once the hole is closed, it is a good idea to select the now closed hole and repeat the "Smoothing" and "Beautifying" operations.