# Circle constrained to line?

**URL:** <https://discourse.shapr3d.com/t/circle-constrained-to-line/26199>\
**Category:** Modeling Questions\
**Created:** [June 8, 2023, 2:06pm UTC](https://discourse.shapr3d.com/t/circle-constrained-to-line/26199 "2023-06-08T14:06:43Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![DigitalM](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/digitalm/32/18932_2.png) [@DigitalM](https://discourse.shapr3d.com/u/DigitalM)\
**Post date:** [June 8, 2023, 2:06pm UTC](https://discourse.shapr3d.com/t/circle-constrained-to-line/26199/1 "2023-06-08T14:06:43Z")

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Sorry, struggling here … is there a way to make a circle constrained to a line that it’s not tangent to. I’d like to be able to move the line down (at the top) and have that move mirrored by a similar distance move down of the circle. Seems like there ought to be a way to do it but I can’t figure it out!

 ![CleanShot 2023-06-08 at 15.04.36](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/b/6/b69aa668a757f93887c5bcab958f5dafa6a17158.png)

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**Author:** ![McD](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/mcd/32/15504_2.png) [@McD](https://discourse.shapr3d.com/u/McD)\
**Post date:** [June 8, 2023, 2:23pm UTC](https://discourse.shapr3d.com/t/circle-constrained-to-line/26199/2 "2023-06-08T14:23:01Z")

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Try selecting both the line and circle, then choose Move. Does that work?

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**Author:** ![DigitalM](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/digitalm/32/18932_2.png) [@DigitalM](https://discourse.shapr3d.com/u/DigitalM)\
**Post date:** [June 8, 2023, 2:25pm UTC](https://discourse.shapr3d.com/t/circle-constrained-to-line/26199/3 "2023-06-08T14:25:01Z")

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It does, I was wondering if it was possible to do this with constraints as in the model there are many circles and one line.

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**Author:** ![McD](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/mcd/32/15504_2.png) [@McD](https://discourse.shapr3d.com/u/McD)\
**Post date:** [June 8, 2023, 2:37pm UTC](https://discourse.shapr3d.com/t/circle-constrained-to-line/26199/4 "2023-06-08T14:37:12Z")

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I’m unsure if we can do it constraints. I’m without my iPad so let’s allow others to comment. McD

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**Author:** ![KPeter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/kpeter/32/7644_2.png) [@KPeter](https://discourse.shapr3d.com/u/KPeter)\
**Post date:** [June 8, 2023, 3:39pm UTC](https://discourse.shapr3d.com/t/circle-constrained-to-line/26199/5 "2023-06-08T15:39:54Z")

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Could it be a solution to draw a line between the horizontal one and the center point of the circle, then:

1. Set the length of the line, so the distance between the circle and the horizontal line will be constant after moving each element
2. Make it a construction line to avoid interfering with sketch fillings

Depending on your use case, Horizontal/Vertical and Perpendicular constraints could be a great addition between the horizontal and the construction line.

Or a simpler solution could be to select the line and the center point of the circle and set the distance between them.

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**Author:** ![DigitalM](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/digitalm/32/18932_2.png) [@DigitalM](https://discourse.shapr3d.com/u/DigitalM)\
**Post date:** [June 9, 2023, 2:48am UTC](https://discourse.shapr3d.com/t/circle-constrained-to-line/26199/6 "2023-06-09T02:48:10Z")

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Thank you so much, this works perfectly.
