# Link two sketch lines

**URL:** <https://discourse.shapr3d.com/t/link-two-sketch-lines/30522>\
**Category:** Modeling Questions\
**Created:** [February 25, 2024, 7:16pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522 "2024-02-25T19:16:15Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![HarrisonDavies](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/harrisondavies/32/24464_2.png) [@HarrisonDavies](https://discourse.shapr3d.com/u/HarrisonDavies)\
**Post date:** [February 25, 2024, 7:16pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/1 "2024-02-25T19:16:15Z")

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Hi all,

Feeling a little dumb. I have two sketch lines I want to link, so that if I update the outer line, the inner line will follow it and keep the same distance between.

I’ve not used the many constraint tools before, I’m used to just drawing and extruding.

Can someone help?

 ![2024-02-25_19-12-56](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/2/6/26fc94b461a463fbdf512a0d2dc821a0d454516a.jpeg)

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [February 25, 2024, 7:39pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/2 "2024-02-25T19:39:25Z")

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> [@HarrisonDavies](#):
>
> so that if I update the outer line, the inner line will follow it and keep the same distance between.

What kind of update you talking about? Length? Position?  
To keep distance between two lines you can add another line perpendicular to them and give it constant length.

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**Author:** ![HarrisonDavies](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/harrisondavies/32/24464_2.png) [@HarrisonDavies](https://discourse.shapr3d.com/u/HarrisonDavies)\
**Post date:** [February 25, 2024, 8:03pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/3 "2024-02-25T20:03:25Z")

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Sorry, length.

If I alter the outer lines length, the inner line will follow it.

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [February 25, 2024, 8:14pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/4 "2024-02-25T20:14:21Z")

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Like so?

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [February 25, 2024, 8:24pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/5 "2024-02-25T20:24:00Z")

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Or like this?

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**Author:** ![HarrisonDavies](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/harrisondavies/32/24464_2.png) [@HarrisonDavies](https://discourse.shapr3d.com/u/HarrisonDavies)\
**Post date:** [February 25, 2024, 8:59pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/6 "2024-02-25T20:59:55Z")

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Yes, that’s it 🙂

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [February 25, 2024, 9:10pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/7 "2024-02-25T21:10:22Z")

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Should I show you how I did that or it’s clear from the videos?

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**Author:** ![HarrisonDavies](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/harrisondavies/32/24464_2.png) [@HarrisonDavies](https://discourse.shapr3d.com/u/HarrisonDavies)\
**Post date:** [February 25, 2024, 9:22pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/8 "2024-02-25T21:22:10Z")

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Being new, it’s not clear. Would you mind showing me?

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<div class="post-metadata">

**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [February 25, 2024, 10:08pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/9 "2024-02-25T22:08:23Z")

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[![](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/a/0/a0a692d5d15b48fc460dc266293ccbf0c8e32390.jpeg "Constraints") ](https://www.youtube.com/watch?v=p60oQ2TMbi0)

> [@HarrisonDavies](#):
>
> Being new

same here 🙂

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<div class="post-metadata">

**Author:** ![HarrisonDavies](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/harrisondavies/32/24464_2.png) [@HarrisonDavies](https://discourse.shapr3d.com/u/HarrisonDavies)\
**Post date:** [February 25, 2024, 10:15pm UTC](https://discourse.shapr3d.com/t/link-two-sketch-lines/30522/10 "2024-02-25T22:15:08Z")

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Thanks so much that has really helped 🙂