Cap Holes Modifier

Select a mesh object. > Modify panel > Modifier List > Cap Holes

Select a mesh object. > Modifiers menu > Mesh Editing > Cap Holes

Tab panels > Modifiers tab > Cap Holes modifier

Cap Holes used to make the cake appear solid

The Cap Holes modifier builds faces in the holes in a mesh object. A hole is defined as a loop of edges, each of which has only one face. For example, one or more missing faces from a sphere would produce one or more holes. The modifier works best on reconstructing planar holes, but can do a reasonable job on non-planar holes as well.

Note: This modifier can cap holes in a sub-object selection passed up the stack. It caps any part of the hole that's adjacent to, or within the selected geometry, whether vertex, edge, or face.

Tips

If the Cap Holes modifier doesn't appear to work, remove it, apply a Mesh Select modifier to select the faces surrounding the hole, then apply Cap Holes to the sub-object selection.
The Cap Holes modifier creates faces with invisible edges unless you turn on All New Edges Visible before you apply it.

Procedure

Example: To cap a hole in a sphere:

Create a sphere.
Apply an Edit Mesh modifier to the sphere.
In the stack display, choose the Face selection level.
Select and delete a contiguous group of faces.
Apply a Cap Holes modifier.
The hole you created should be filled.
Tip: Turning on Smooth With Old Faces makes the cap less visible.

Interface

Smooth New Faces—Assigns the same smoothing group number to all new faces. If possible, this will be a smoothing group number not used elsewhere in the object.

Smooth With Old Faces—Smoothes new triangular faces using the smoothing groups from bordering old faces. This smoothes only one level in from the perimeter of the border of the hole, so you might need to use both this and the Smooth New Faces option to properly smooth a large hole.

Note: When Smooth With Old Faces is turned on, the faces in the capped holes inherit a material face ID from one of the surrounding faces. When this item is turned off, the faces in the capped holes are assigned a new ID.

All New Edges Visible—Makes all of the edges visible in the new faces.

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