Create a polyline from the boundary of existing objects - AutoCAD Tips Blog
Convert 3D to 2d Polylines in flexible ways - YouTube
Convert polylines to 3d faces in AutoCAD and BricsCAD - YouTube
AutoCAD Sweep along 3D Polyline | Autocad Sweep 3D Path | AutoCAD 2015 Piping - YouTube
3d to 2d-polylines | UrbanLISP AutoCAD Command
3D Faces ri a single enclosing 3D Polyline - AutoCAD 3D Modelling & Rendering - AutoCAD Forums
Autocad Tutorial : How to convert 3D polyline to 2d polyline - YouTube
Polyline3D to Surface - Civil3D - Dynamo
Free Autolisp: Convert Face to Polyline
Civil 3D 2013: 2D and 3D Polyline Conversion | Ideate Inc
Promine AutoCAD Tips & Tricks: Convert 3D Face Into 3D Solid - YouTube
CAD Forum - How to convert a 2D polyline to 3D or vice-versa?
CAD Forum - How to convert 3D polylines to 3D surfaces?
3dFace to Lines - YouTube
Lisp or Net Routine for converting 3d polylines to 3d faces? - Autodesk Community - Civil 3D
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CAD Forum - Intersection of a 3D curve with a 3D surface in AutoCAD.
Solved: convert 3D face objects to single Autocad Surface - Autodesk Community - AutoCAD
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Solved: [AutoCAD 2018] Converting noncoplanar 3D polyline into a solid? - Autodesk Community - AutoCAD
Helpful Settings for Plotting 3D Solids in AutoCAD | AutoCAD Tips
Free Autolisps: Convert 3D Face to STL File
Solved: 3D faces to 3d polylines (or convert surface to ArcGIS .tin) - Autodesk Community - Civil 3D
Site3D - Road and Site Design - File Output
Solved: Convert metric 3d polyline to 2d polyline - Autodesk Community - Civil 3D
