# DupMeshEdge

**URL:** <https://discourse.mcneel.com/t/dupmeshedge/12569>\
**Category:** Rhino for Windows\
**Created:** [October 20, 2014, 12:11pm UTC](https://discourse.mcneel.com/t/dupmeshedge/12569 "2014-10-20T12:11:02Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![hanparker](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/hanparker/32/160099_2.png) [@hanparker](https://discourse.mcneel.com/u/hanparker)\
**Post date:** [October 20, 2014, 12:11pm UTC](https://discourse.mcneel.com/t/dupmeshedge/12569/1 "2014-10-20T12:11:03Z")

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I have a mesh. I want the curve that goes along the edge of the mesh. With Surfaces I use DupEdge. I’ve tried DupMeshEdge - but this either only gives me the edge of one of the triangles of the mesh.

Is what I want to do possible?

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**Author:** ![Helvetosaur](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/helvetosaur/32/635974_2.png) [@Helvetosaur](https://discourse.mcneel.com/u/Helvetosaur)\
**Post date:** [October 20, 2014, 12:15pm UTC](https://discourse.mcneel.com/t/dupmeshedge/12569/2 "2014-10-20T12:15:17Z")

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> [@hanparker](#):
>
> I’ve tried DupMeshEdge - but this either only gives me the edge of one of the triangles of the mesh.

You should be able to vary the angle on DupMeshEdge to get what you want…

DupBorder can extract the outer borders of a mesh. Otherwise you can also use ExtractMeshFaces and play with the angle settings to get your edges… --Mitch

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**Author:** ![hanparker](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/hanparker/32/160099_2.png) [@hanparker](https://discourse.mcneel.com/u/hanparker)\
**Post date:** [October 20, 2014, 12:53pm UTC](https://discourse.mcneel.com/t/dupmeshedge/12569/3 "2014-10-20T12:53:34Z")

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Thanks for your help Mitch.  
I have tried these but am still failing.  
This is a link to a picture of a section of the mesh. I am trying to get the edge to the left and the right. What would you suggest I do with the angle to make it work? [mesh picture](http://www.seo-sage.co.uk/dupmeshedge.png)

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**Author:** ![pascal](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/pascal/32/479395_2.png) [@pascal](https://discourse.mcneel.com/u/pascal)\
**Post date:** [October 20, 2014, 3:22pm UTC](https://discourse.mcneel.com/t/dupmeshedge/12569/4 "2014-10-20T15:22:15Z")

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Hi hanparker- Try Weld on the mesh at 90 degrees - does that let DupEdge work as you expect?

-Pascal

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**Author:** ![hanparker](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/hanparker/32/160099_2.png) [@hanparker](https://discourse.mcneel.com/u/hanparker)\
**Post date:** [October 20, 2014, 4:22pm UTC](https://discourse.mcneel.com/t/dupmeshedge/12569/5 "2014-10-20T16:22:36Z")

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Hi Pascal,

Thanks for your suggestion. I tried it - but I expect I am doing it wrong. If I do Weld\>Select mesh\>90 then DupEdge and select mesh - it requires me to select every single mesh face edge along the mesh. The Mesh is made up of 20cm triangles and is a 5k circuit - so I don’t fancy selecting every single triangle edge. What am I getting wrong with the Weld?

Thanks,

Hannah

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**Author:** ![pascal](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/pascal/32/479395_2.png) [@pascal](https://discourse.mcneel.com/u/pascal)\
**Post date:** [October 20, 2014, 4:24pm UTC](https://discourse.mcneel.com/t/dupmeshedge/12569/6 "2014-10-20T16:24:25Z")

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Hannah, can you please post the mesh or send it to me?

thanks,

-Pascal

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**Author:** ![hanparker](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/hanparker/32/160099_2.png) [@hanparker](https://discourse.mcneel.com/u/hanparker)\
**Post date:** [October 20, 2014, 4:35pm UTC](https://discourse.mcneel.com/t/dupmeshedge/12569/7 "2014-10-20T16:35:33Z")

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I have just messaged you a link. Thank you.