ExtractMeshEdges

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.

Notes

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Some STL/SLA printers have problems if meshes contain many long, thin facets. These can slow the printer's slicing process down, produce odd printed results, and run the printer out of memory.

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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.

ExtractNonManifoldMeshEdges

The ExtractNonManifoldMeshEdges command separates from the parent mesh non-manifold faces.

Nonmanifold edges

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

The illustration shows polysurfaces with non-manifold edges highlighted with the ShowEdges command.

Steps

Select a mesh.

Notes

●

Some STL/SLA printers have problems if meshes contain many long, thin facets. These can slow the printer's slicing process down, produce odd printed results, and run the printer out of memory.

●

The MeshRepair command may be useful when tuning up meshes for STL/SLA printing.