Extract object sub-elements
The commands that extract parts of objects can be used to
- Create curves based on the geometry of the object.
- Open a hole or to separate a badly constructed surface from a polysurface in order to repair it.
- Separate the render or analysis mesh from an object in order to use the mesh for a different purpose such as rapid prototyping or rendering.
- Remove mesh faces in order to repair problems with a mesh.
Extract curves from a surface or polysurface
![](../image/command_icons/extractcontrolpolygon.png)
ExtractControlPolygon
Fit a polyline through curve control points or a mesh through surface control points.
![](../image/command_icons/_no_toolbar_button.png)
ExtractCurvatureGraph
Duplicate a curve's curvature graph.
![](../image/command_icons/extractisocurve.png)
ExtractIsocurve
Duplicate surface isoparametric curves.
![](../image/command_icons/extractpt.png)
ExtractPt
Duplicate curve control or edit points, surface control points, and mesh vertices.
![](../image/command_icons/extractsubcrv.png)
ExtractSubCrv
Separate or duplicate polycurve segments.
![](../image/command_icons/extractwireframe.png)
ExtractWireframe
Duplicate surface or polysurface edge and isoparametric curves.
Extract surfaces from a polysurface
![](../image/command_icons/extractbadsrf_rt.png)
ExtractBadSrf
Separate surfaces with errors from a polysurface.
![](../image/command_icons/extractsrf.png)
ExtractSrf
Separates or duplicates polysurface, Extrusion, or SubD faces.
Extract mesh faces and edges
![](../image/command_icons/extractconnectedmeshfaces.png)
ExtractConnectedMeshFaces
Separate mesh faces connected to a face.
![](../image/command_icons/extractduplicatemeshfaces.png)
ExtractDuplicateMeshFaces
Separate duplicated faces from a mesh.
![](../image/command_icons/extractmeshedges.png)
ExtractMeshEdges
Separate faces from the parent mesh determined by a draft angle or weld status.
![](../image/command_icons/extractmeshfaces.png)
ExtractMeshFaces
Separate faces from a mesh.
![](../image/command_icons/extractmeshfacesbyarea.png)
ExtractMeshFacesByArea
Separate faces from a mesh by area.
![](../image/command_icons/extractmeshfacesbyaspectratio.png)
ExtractMeshFacesByAspectRatio
Separate faces from a mesh by aspect ratio.
![](../image/command_icons/extractmeshfacesbydraftangle.png)
ExtractMeshFacesByDraftAngle
Separate faces from a mesh by a draft angle or weld status.
![](../image/command_icons/extractmeshfacesbyedgelength.png)
ExtractMeshFacesByEdgeLength
Separate faces from a mesh by edge length.
![](../image/command_icons/extractmeshpart.png)
ExtractMeshPart
Separate faces from a mesh that are bounded by unwelded, non-manifold, or naked edges.
![](../image/command_icons/_no_toolbar_button.png)
ExtractNonManifoldMeshEdges
Separate non-manifold faces from a mesh.
Extract object meshes
![](../image/command_icons/_no_toolbar_button.png)
ExtractAnalysisMesh
Duplicate an object's analysis mesh.
![](../image/command_icons/_no_toolbar_button.png)
ExtractPipedCurve
Duplicate a curve's piping mesh.
![](../image/command_icons/_no_toolbar_button.png)
ExtractRenderMesh
Duplicate the render mesh.
![](../image/command_icons/_no_toolbar_button.png)
ExtractUVMesh
Duplicate the uv mesh.
See also
Collapse mesh faces and vertices
The MeshRepair command integrates many mesh cleanup commands into a single dialog.