# Planes & constraints

**URL:** <https://discourse.shapr3d.com/t/planes-constraints/13264>\
**Category:** Modeling Questions\
**Created:** [June 11, 2021, 10:30pm UTC](https://discourse.shapr3d.com/t/planes-constraints/13264 "2021-06-11T22:30:08Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\
**Post date:** [June 11, 2021, 10:30pm UTC](https://discourse.shapr3d.com/t/planes-constraints/13264/1 "2021-06-11T22:30:08Z")

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2 things would be useful for planes. Some constraints (e.g. parallel, perpendicular, tangent etc) and being able to invoke xyz axis lines with respect to the selected plane.

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [June 12, 2021, 8:00pm UTC](https://discourse.shapr3d.com/t/planes-constraints/13264/2 "2021-06-12T20:00:55Z")

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Constraints in terms of that the relationships are maintained when you change a geometry?

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**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\
**Post date:** [June 13, 2021, 3:43pm UTC](https://discourse.shapr3d.com/t/planes-constraints/13264/3 "2021-06-13T15:43:47Z")

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Use constraints on a plane with respect to another plane, sketch element or geometry. e.g use the parallel constraint on a plane with respect to another plane.

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [June 13, 2021, 5:45pm UTC](https://discourse.shapr3d.com/t/planes-constraints/13264/4 "2021-06-13T17:45:51Z")

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The reason I am asking is that there are multiple options to create CPs, including parallel, tangent, etc. But the relationship is not maintained after creating the planes.

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**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\
**Post date:** [June 13, 2021, 7:04pm UTC](https://discourse.shapr3d.com/t/planes-constraints/13264/5 "2021-06-13T19:04:49Z")

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I will have to investigate some more in an simpler project. Thought about this while working on a large project trying to place a plane on an edge with respect to another item and also parallel to the relative floor of the project. Sure I can figure the angle and rotate the plane accordingly. That is also where a Measurement tool that could measure angles and distances between bodies, point on bodies lines etc. is needed.

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [June 13, 2021, 7:08pm UTC](https://discourse.shapr3d.com/t/planes-constraints/13264/6 "2021-06-13T19:08:41Z")

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There are a ton of options: [How do I create a construction plane? – Shapr3D Help Desk](https://support.shapr3d.com/hc/en-us/articles/360014669319-How-do-I-create-a-construction-plane-)