To Remove Double Triangles

Remove unnecessary duplicates of triangles

Very noisy mesh generation methods or CAD-to-mesh conversions may cause the resulting meshes to have triangles that exist multiple times. If those duplicates are merely artifacts of importing, rather than meaningful surfaces, cleaning them from the mesh is the recommended method of dealing with them.

Triangles with the same coordinates but different orientations show with a grainy shade that flickers when the view is rotated.

To remove duplicates and leave only one triangle,

1. Select the part to repair.
2. From the main menu, choose Prepare > Repair Part.

   The repair module loads.

3. From the main menu, choose Repair > Remove Double Triangles.
4. In the context view, click Apply Repair.
5. Choose from the three actions:
   • Remove old part: Creates a new part while deleting the original part.
   • Keep old part: Creates a new part and keeps the original part.
   • Keep and compare: Creates a new part and keeps the original part. It also launches a mesh comparison on these two parts.

Note: Complex layering arrangements may cause this action to remove the "right" triangle and leave the "wrong" one behind. You should check for those, and address any holes, flipped normals, or other possible side effects of this repair action.