Open mesh with no naked edges

What’s up with this mesh?

OpenMesh.3dm (157.3 KB)

It lists as open when I select it.
ShowEdges finds no naked or non-manifold edges
Volume computes a volume that seems about right but complains about it being open.
MeshRepair says it’s good and lists it as open:

This is a good mesh.

General information about this mesh:
Mesh does not have any degenerate faces.
Mesh does not have any ngons.
Mesh does not have any extremely short edges.
Mesh does not have any non manifold edges.
Mesh does not have any naked edges.
Mesh does not have any duplicate faces.
Mesh does not have any faces with directions different from the mesh as a whole.
Mesh does not have any self intersecting faces.
Mesh does not have any disjoint pieces.
Mesh does not have any unused vertices.

ID: 114ecfaa-c19e-4faf-ba47-366c934a6877 (24808)
Object name: (not named)
Layer name: _Fill - 1
Render Material:
source = from layer
index = -1

Geometry:
Valid mesh.
Open double precision polygon mesh: 463 vertices, 322 faces with normals (56 n-gons)
Bounding box: (-788.054,-866.462,4904.34) to (-365.749,-595.68,5017.95)
Geometry UserData:
UserData ID: 769DDDD4-1756-4c95-A026-8E975D704AEA
description:
saved in file: no
copy count: 0

Thanks

  • Lowell

Hi @Lowell1,

i’ve recently sent a similar case to @dale have been told that _RebuildMesh using default settings fixes it. It seems to fix your’s too, but the ngons will be lost. To get them back, use _AddNgonsToMesh.

_
c.

2 Likes

Thank you