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
Offset Polylines and modify the offseted polylines elevations! Civil 3D	5	1043	September 23, 2022
Simple polyline offset to different layers? Civil 3D dynamo	15	2118	July 30, 2022
PolyCurve.Offset to AutoCAD entity Civil 3D geometry , dynamo	10	297	March 19, 2024
Alignment offset and Circle by Tan Tan Radius node Civil 3D	7	830	August 25, 2020
Multiple offset of Polyline, or Alignment Civil 3D dynamo	11	2083	April 4, 2024

Node for a simple polyline offset?

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