ExtractMeshEdges

Toolbar	Menu
Extract Mesh	Not on menus.

Toolbar

Not on menus.

The ExtractMeshEdges command separates edges from the parent mesh determined by an angle between mesh face normals.

The command may help if you have a mesh that came from a polysurface but no longer have the polysurface. Using the command with the Unwelded option creates polyline approximations of where the edges of the polysurface were.

Some STL/SLA printers have problems if meshes contain many long, thin facets. These facets can slow the printer down, produce odd results, or run the printer out of memory.
The MeshRepair command may be useful when tuning up meshes for STL/SLA printing.

Steps

Select a mesh.

Command-line options
Extract edges by	Unwelded Extracts edges with coincident vertices. Break angle The angle between the face normals of adjacent faces. Greater than Specify a minimum break angle. Select Edge Specify an example edge to set the minimum break angle. Less than Specify a maximum break angle Select Edge Specify an example edge to set the maximum break angle.
Join results	Joins the resulting curves.

Command-line options

Extract edges by

Unwelded

Extracts edges with coincident vertices.

Break angle

The angle between the face normals of adjacent faces.

Greater than

Specify a minimum break angle.

Select Edge

Specify an example edge to set the minimum break angle.

Less than

Specify a maximum break angle

Select Edge

Specify an example edge to set the maximum break angle.

Join results

Joins the resulting curves.

ExtractNonManifoldMeshEdges

Toolbar	Menu
Not on toolbars.	Not on menus.

Toolbar

Not on toolbars.

Not on menus.

The ExtractNonManifoldMeshEdges command extracts the mesh faces that have non-manifold edges from a mesh object.

Non-manifold edges

Edges of polysurfaces or meshes that have more than two faces joined to a single edge are non-manifold.

The illustration shows a mesh and a polysurface with non-manifold edges highlighted with the ShowEdges command.

Steps

Start the command.
Set command-line options.
Select a mesh.

Command-line options

ExtractHangingFacesOnly

Only extracts the faces with non-manifold and naked edges.

Yes

No

Some STL/SLA printers have problems if meshes contain many long, thin facets. These facets can slow the printer down, produce odd results, or run the printer out of memory.
The MeshRepair command may be useful when tuning up meshes for STL/SLA printing.

ExtractMeshEdges

Steps

Unwelded

Break angle

Greater than

Select Edge

Less than

Select Edge

ExtractNonManifoldMeshEdges

Non-manifold edges

Steps

ExtractHangingFacesOnly

Yes

No

See also