# How to revolve a thread on a curved surface

**URL:** <https://discourse.shapr3d.com/t/how-to-revolve-a-thread-on-a-curved-surface/20720>\
**Category:** Modeling Questions\
**Created:** [August 3, 2022, 4:29pm UTC](https://discourse.shapr3d.com/t/how-to-revolve-a-thread-on-a-curved-surface/20720 "2022-08-03T16:29:44Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Co\_Dizle](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@Co\_Dizle](https://discourse.shapr3d.com/u/Co_Dizle)\
**Post date:** [August 3, 2022, 4:29pm UTC](https://discourse.shapr3d.com/t/how-to-revolve-a-thread-on-a-curved-surface/20720/1 "2022-08-03T16:29:44Z")

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I am attempting to revolve a screw thread on the ext. of a curved surface. When i revolve my thread (triangle shape) off the axis, it will naturally not follow the ext. of the body’s curvature its attached to. Is there a way to do this?

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**Author:** ![Stephen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/stephen/32/16350_2.png) [@Stephen](https://discourse.shapr3d.com/u/Stephen)\
**Post date:** [August 3, 2022, 8:15pm UTC](https://discourse.shapr3d.com/t/how-to-revolve-a-thread-on-a-curved-surface/20720/2 "2022-08-03T20:15:23Z")

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You can project a line around the curved surface first.

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**Author:** ![Co\_Dizle](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@Co\_Dizle](https://discourse.shapr3d.com/u/Co_Dizle)\
**Post date:** [August 3, 2022, 8:51pm UTC](https://discourse.shapr3d.com/t/how-to-revolve-a-thread-on-a-curved-surface/20720/3 "2022-08-03T20:51:02Z")

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Hey Stephen, thank you but I don’t see how that would work. Can you send a video?

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**Author:** ![Co\_Dizle](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@Co\_Dizle](https://discourse.shapr3d.com/u/Co_Dizle)\
**Post date:** [August 3, 2022, 9:37pm UTC](https://discourse.shapr3d.com/t/how-to-revolve-a-thread-on-a-curved-surface/20720/5 "2022-08-03T21:37:31Z")

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Unfortunately I’m too new to the server to post a video, I’ve adjusted the original wording to try and help you understand. Hope it helps!

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**Author:** ![Co\_Dizle](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@Co\_Dizle](https://discourse.shapr3d.com/u/Co_Dizle)\
**Post date:** [August 4, 2022, 7:30pm UTC](https://discourse.shapr3d.com/t/how-to-revolve-a-thread-on-a-curved-surface/20720/7 "2022-08-04T19:30:35Z")

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For anyone who is curious, I haven’t yet tried it but here is the response I received from Shapr3D

Ticket reply:

Hello,

Thank you for contacting us,

Yes, sweeping a cross-section along a projected path could be a solution.

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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:** [August 5, 2022, 6:03am UTC](https://discourse.shapr3d.com/t/how-to-revolve-a-thread-on-a-curved-surface/20720/8 "2022-08-05T06:03:54Z")

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Let me add the video from that support ticket for the record, hopefully, it will help visitors in the future 🙂

The following thread in the meantime may be helpful for connecting separate projections accurately:

> [@Earth globe puzzle](https://discourse.shapr3d.com/t/earth-globe-puzzle/10211):
>
> The most difficult project for me