The commands that extract parts of objects can be used to
Fit a polyline through curve control points or a mesh through surface control points.
Duplicate a curve's curvature graph.
Duplicate surface isoparametric curves.
Duplicate curve control or edit points, surface control points, and mesh vertices.
Separate or duplicate polycurve segments.
Duplicate surface or polysurface edge and isoparametric curves.
Separate surfaces with errors from a polysurface.
Separate or duplicate a polysurface face.
Separate mesh faces connected to a face.
Separate duplicated faces from a mesh.
Separate faces from the parent mesh determined by a draft angle or weld status.
Separate faces from a mesh.
Separate faces from a mesh by area.
Separate faces from a mesh by aspect ratio.
Separate faces from a mesh by a draft angle or weld status.
Separate faces from a mesh by edge length.
Separate faces from a mesh that are bounded by unwelded edges.
Separate non-manifold faces from a mesh.
Duplicate an object's analysis mesh.
Duplicate a curve's piping mesh.
Duplicate the render mesh.
Duplicate the uv mesh.
Collapse mesh faces and vertices
White paper: Scan, Cleanup, Remodel
Rhinoceros 6 © 2010-2019 Robert McNeel & Associates. 16-May-2019