# Create faces, to get 3D intersection spline

**URL:** <https://discourse.shapr3d.com/t/create-faces-to-get-3d-intersection-spline/36206>\
**Category:** Share your creations\
**Created:** [January 24, 2025, 8:35am UTC](https://discourse.shapr3d.com/t/create-faces-to-get-3d-intersection-spline/36206 "2025-01-24T08:35:30Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![KEKE63](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/keke63/32/34162_2.png) [@KEKE63](https://discourse.shapr3d.com/u/KEKE63)\
**Post date:** [January 24, 2025, 8:35am UTC](https://discourse.shapr3d.com/t/create-faces-to-get-3d-intersection-spline/36206/1 "2025-01-24T08:35:30Z")

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I want to create a 3D spline, to design a 3D pipe (exhaust)  
May we create face or surface, and intersect them?  
See drawing attached. Sorry for the strange language

 ![Admission turbo Kawasaki Z1400 turbo](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/3/1/31bfc226d3ffc2be47d4e63e606b95e6eae84fc7.jpeg)

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**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [January 24, 2025, 8:40am UTC](https://discourse.shapr3d.com/t/create-faces-to-get-3d-intersection-spline/36206/2 "2025-01-24T08:40:05Z")

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Good tutorial here on 3d tube/pipe

> [@Drawing/sketching spline between planes (flexible tubing)](https://discourse.shapr3d.com/t/drawing-sketching-spline-between-planes-flexible-tubing/35537/10):
>
> Here’s an example. I selected both beginning and ending circle edges. Note at the bottom lower right of the screen there are measurements- deltaX, Y, and Z (shown just before the transition). It gets a little more complicated when the two pipes are at different angles to each other but still doable.

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**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [January 24, 2025, 4:14pm UTC](https://discourse.shapr3d.com/t/create-faces-to-get-3d-intersection-spline/36206/3 "2025-01-24T16:14:45Z")

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Sketch out your curves and project them onto the curved surface.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/0/9/098a67b0acc04e8c63645056249a3bb0519bd84f.jpeg)

Sweep the projected curve.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/1/f/1f6dddf81927f6e630004787e43a478ce8e1f768.jpeg)

You will be able adjust the pipe afterwards as well.

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**Author:** ![KEKE63](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/keke63/32/34162_2.png) [@KEKE63](https://discourse.shapr3d.com/u/KEKE63)\
**Post date:** [January 27, 2025, 9:55am UTC](https://discourse.shapr3d.com/t/create-faces-to-get-3d-intersection-spline/36206/4 "2025-01-27T09:55:30Z")

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Many thanks. I will try asap and let you know

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**Author:** ![KEKE63](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/keke63/32/34162_2.png) [@KEKE63](https://discourse.shapr3d.com/u/KEKE63)\
**Post date:** [October 5, 2025, 4:35pm UTC](https://discourse.shapr3d.com/t/create-faces-to-get-3d-intersection-spline/36206/5 "2025-10-05T16:35:38Z")

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Many thanks, after a couple weeks, see the final pipe

 ![Capture d’écran 2025-10-05 à 18.34.14](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/a/1/a13fcd00a89f73382efa39dcf288e66fc55e2a6c.jpeg)