# How can I create a line that loops behind itself? Similar to a knot?

**URL:** https://discourse.shapr3d.com/t/how-can-i-create-a-line-that-loops-behind-itself-similar-to-a-knot/23143
**Category:** Modeling Questions
**Created:** [December 21, 2022, 9:38pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-line-that-loops-behind-itself-similar-to-a-knot/23143 "2022-12-21T21:38:51Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![crackerjackjack](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/crackerjackjack/32/18349_2.png) [@crackerjackjack](https://discourse.shapr3d.com/u/crackerjackjack)
#### Post date: [December 21, 2022, 9:38pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-line-that-loops-behind-itself-similar-to-a-knot/23143/1 "2022-12-21T21:38:51Z")

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I’m struggling trying to figure out how to make a line loop back and go either above or behind itself.

In the attached example I would like the red line to go above (over top) the green line at the one intersection and below (under) at the other.

Is that possible?

 ![CleanShot 2022-12-21 at 16.34.49 2@2x](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/f/a/fab2b24b147da1d7441c313efd213bb1b2c9468f.jpeg)

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### Author: ![FWP](https://avatars.discourse-cdn.com/v4/letter/f/a587f6/32.png) [@FWP](https://discourse.shapr3d.com/u/FWP)
#### Post date: [December 21, 2022, 10:38pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-line-that-loops-behind-itself-similar-to-a-knot/23143/2 "2022-12-21T22:38:10Z")

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One way is to first draw the shape in 2 dimensions and then select an endpoint of one of your lines and use the move/rotate tool.