Author Topic: Polyline lineweight does not display  (Read 3536 times)

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  • Newt
  • Posts: 90
Polyline lineweight does not display
« on: April 28, 2021, 11:41:42 AM »
Both versions of Civil 3D 2018 and 2020 have the same problem.  Polylines (LWpolylines, 2d and 3d polylines) do not display lineweights properly.  This appears both on screen and when plotted.


 2d polyline (heavy) appear correctly.

 If the polyline has a fit or spline applied, it appears normally.  If the spline is removed, the weight changes.

 Civil 3D objects like parcel lines, feature lines, etc. that are derived from polylines appear normally.

 If a polyline that does not appear correct is rotated or scaled, the entity jig displays the weight correctly but the weight changes back when the command completes.

 If the polyline is exploded, the base entities appear correctly.

Does anyone have any help they could offer?

Thank you,
« Last Edit: April 28, 2021, 10:42:04 PM by sdunn »


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  • Seagull
  • Posts: 28762
Re: Polyline lineweight does not display
« Reply #1 on: May 12, 2021, 10:52:20 AM »
I can not replicate your problem. :( I have no issues with line weights and polylines.  (serving the CAD community since 2003)


  • Swamp Rat
  • Posts: 1152
Re: Polyline lineweight does not display
« Reply #2 on: May 18, 2021, 09:18:38 AM »
make sure you are not mixing width and weight.  PLine width will over-ride the lineweight assigned.  So a Pline with a width of 1 and a lineweight of 2 will plot as a 1.
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  • Swamp Rat
  • Posts: 978
Re: Polyline lineweight does not display
« Reply #3 on: May 18, 2021, 09:37:24 AM »
@Sdunn - can you share a simple drawing with a few misbehaving entities in it, only?