Use Fill Holes () to repair an imported 3D surface mesh that might have minor holes, as seen in Figure 8-55.

To add a Fill Holes () node, select one or more boundaries in which to fill holes, then choose one of the following:

Enter the properties for the Fill Holes node using the following sections:

Holes that have a perimeter less than the tolerance are filled. You specify the tolerance using the Maximum hole perimeter list:

The Join with selected boundaries check box is selected by default. If selected, the created mesh elements (triangles) that fill the hole are added to the surrounding face. If you clear this check box, or if the hole is adjacent to more than one face, the created mesh elements form a new face.

Select the Create domains check box (selected by default) to automatically form domains for each (connected) finite void region that is defined by the imported surface mesh and analyze these domains with respect to the mesh that might already exist in the sequence. Clear the check box to not form domains, for example if more repairing is needed before the mesh forms watertight regions. Consider to later add a Create Domains operation if you clear the check box.

Select the Resulting domains check box to create a predefined selection in subsequent nodes in the mesh sequence. To also make the selection available in all applicable selection lists outside the mesh sequence or mesh part (in physics and materials settings, for example), select the Show in physics (Show outside part if in a mesh part) check box. These selections do not appear as separate selection nodes in the model tree. From the Color list, choose a color for highlighting the resulting objects selection. See Selection Colors and Creating Named Selections in the Mesh Sequence.