Cap Holes Modifier

• Select a mesh object. > Modify panel > Modifier List > Cap Holes
• Default menu: Select a mesh object. > Modifiers menu > Mesh Editing > Cap Holes
• Alt menu: Select a mesh object. > Modifiers menu > Geometry (Convert to Mesh) > Cap Holes

Cap Holes used to make the wheel appear solid

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.

Triangulate Cap

Makes all of the edges visible in the new faces.