# Merging 2 Network Curves into One
**URL:** https://discourse.slicer.org/t/merging-2-network-curves-into-one/31610
**Category:** Support
**Tags:** centerlines
**Created:** [September 7, 2023, 7:24pm UTC](https://discourse.slicer.org/t/merging-2-network-curves-into-one/31610 "2023-09-07T19:24:52Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@sthaker](https://discourse.slicer.org/u/sthaker)
#### Post date: [September 7, 2023, 7:24pm UTC](https://discourse.slicer.org/t/merging-2-network-curves-into-one/31610/1 "2023-09-07T19:24:52Z")
Hello,
I have been having this issue (using ExtractCenterline Module) when I am trying to extract the centerlines of a stl model of an aorta where there is a random branch (one not bounded by an endpoint) that is added. I delete the random branch, but I do not know how to merge the other two network curves into one curve so that I can resample the combined curve with 50 points in the Markups Module. Could someone please help me with this issue?
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 8, 2023, 4:07am UTC](https://discourse.slicer.org/t/merging-2-network-curves-into-one/31610/2 "2023-09-08T04:07:01Z")
You can copy the control points in Markups module’s Control points section, copy and paste (or prgrammatically using Python scripting).
> [@sthaker](#):
>
> I am trying to extract the centerlines of a stl model of an aorta where there is a random branch (one not bounded by an endpoint) that is added
If you use “Centerline extraction” then curve will be drawn only between endpoints that you specify.
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### Author:  [@sthaker](https://discourse.slicer.org/u/sthaker)
#### Post date: [September 9, 2023, 5:56pm UTC](https://discourse.slicer.org/t/merging-2-network-curves-into-one/31610/3 "2023-09-09T17:56:50Z")
Thanks so much for your help!