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  1. Autodesk Civil 3D Help | To Convert 3D Polylines to 2D | Autodesk

    Use the Convert 3D To 2D Polylines command to convert 3D to 2D polylines. The new polyline will take on the elevation of the start point of the 3D polyline. Click Modify tab Design panel …

  2. Convert 3D Polyline to 2D Polyline - HowToAutoCAD

    May 24, 2012 · Converting between the various types therefore has obvious difficulty, because going from 3D to 2D means you're going to have to remove some of the 3D information from …

  3. How to Convert 3D Polyline to Polyline in AutoCAD

    Converting 3D polylines to 2D polylines in AutoCAD is a vital task for simplifying drawings and preparing models for production. Whether you use the built-in conversion tools, manual …

  4. CAD Forum - How to convert a 3DPOLYLINE to a 2DPOLYLINE ...

    There are several ways to convert a three-dimensional 3DPOLYLINE entity to a standard 2D lightweight polyline (lwpolylines): If you want to just cut-off the Z-coordinates of a 3D polyline …

  5. Convert 3D Polyline to 2D Polyline in AutoCAD in 5 Seconds! # ...

    In this quick 50-second tutorial, learn how to convert a 3D Polyline to a 2D Polyline in AutoCAD in just 5 seconds!

  6. Convert 3D Polyline to 2D: A Simple Guide

    By converting a 3D polyline to 2D, it becomes easier to view and edit the polyline, which can save time and increase efficiency. In this article, we have discussed several methods for converting …

  7. How to create 2D Polylines from 3D Polylines with AutoCAD ...

    Mar 31, 2025 · The best way to achieve a conversion of 3D Polylines to 2D Polylines is the command CONVERT3DPOLYS from Civil 3D. Look for the help description.