I’ve searched on this forum to find the node that does a simple polyline offset. I’ve notice that most people use the node PolylineExtension.Offset, but I can’t find this node in Dynamo. Do you need to install a certain package? I run Civil 3D/Dynamo 2025. I just can’t find this node. I found PolyCu…

You can use PolyCurve.OffsetMany but you need to get the Dynamo geometry of the object and then convert the offset Polycurves to AutoCAD geometry again. See this example. [image] You can also use a List for distances and offset multiple lines at once. [image]

Node for a simple polyline offset?

Civil 3D

Anton_Huizinga May 28, 2025, 10:16am 6

The Civil Nodes package contains a node to offset Polylines directly:

Topic		Replies	Views
Simple polyline offset to different layers? Civil 3D dynamo	15	2134	July 30, 2022
Offset Polylines and modify the offseted polylines elevations! Civil 3D	5	1205	September 23, 2022
PolyCurve.Offset to AutoCAD entity Civil 3D geometry , dynamo	10	317	March 19, 2024
Creating Polyline offset from Alignment Civil 3D geometry	21	3668	June 22, 2023
Multiple offset of Polyline, or Alignment Civil 3D dynamo	11	2153	April 4, 2024

Node for a simple polyline offset?

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