# Bicycle Stay

**URL:** <https://discourse.shapr3d.com/t/bicycle-stay/41090>\
**Category:** Modeling Questions\
**Created:** [June 19, 2026, 1:02pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090 "2026-06-19T13:02:02Z")\
**Posts on this page:** 12\
**Page:** 1

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**Author:** ![Boothy](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/boothy/32/18040_2.png) [@Boothy](https://discourse.shapr3d.com/u/Boothy)\
**Post date:** [June 19, 2026, 1:02pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/1 "2026-06-19T13:02:02Z")

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Hi guys, can anyone help, I am attempting to model a bicycle frame, after using the spline tool and ellipses along 7 point using construction plains, I can use the loft tool to make a solid part but it won’t let me Shell to make a tube, I anyone could help that would be great.

Cheers Rob.

 ![IMG_0059](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/4/8/481e3039e90187eb9d83bbd9953198f3e021a30c.jpeg)

[https://support.shapr3d.com/hc/en-us/requests/new](https://support.shapr3d.com/hc/en-us/requests/new)

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [June 19, 2026, 1:17pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/2 "2026-06-19T13:17:25Z")

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It’s quite difficult to tell what the problem is from just one picture. Can you share the project?

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**Author:** ![Boothy](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/boothy/32/18040_2.png) [@Boothy](https://discourse.shapr3d.com/u/Boothy)\
**Post date:** [June 19, 2026, 1:23pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/3 "2026-06-19T13:23:54Z")

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Hi mate, basically the above picture is a rear stay from a bicycle, I am just looking for a method to hollow it out to make it an extruded “tube” with a .9mm wall thickness.

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**Author:** ![DrKronos](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/drkronos/32/36064_2.png) [@DrKronos](https://discourse.shapr3d.com/u/DrKronos)\
**Post date:** [June 19, 2026, 1:37pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/4 "2026-06-19T13:37:53Z")

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Just a guess, but what might be catching you out is the profile sketches still being toggled visible. So maybe you’re selecting the sketches instead of the`“end cap” body surfaces of your tube when using the shell tool?

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [June 19, 2026, 2:58pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/5 "2026-06-19T14:58:47Z")

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> [@Boothy](#):
>
> I am just looking for a method to hollow it out to make it an extruded “tube” with a .9mm wall thickness.

The problem is I don’t have any problem with shelling the lofted body.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/1/e/1e4a3ab4a990dc9dacecb8b3acb747baf8e79819.png)

That’s why I’m asking to share your project to understand where is the problem.

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [June 19, 2026, 3:01pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/6 "2026-06-19T15:01:51Z")

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> [@DrKronos](#):
>
> Just a guess

Good guess. I just didn’t think that someone who has been using Shapr3D for five years would not understand that 🙂

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**Author:** ![Boothy](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/boothy/32/18040_2.png) [@Boothy](https://discourse.shapr3d.com/u/Boothy)\
**Post date:** [June 19, 2026, 4:46pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/7 "2026-06-19T16:46:00Z")

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.[Shapr3D - Project](https://app.shapr3d.com/p/ea3afc3c-780f-4428-8bae-d73200a12606)

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**Author:** ![Boothy](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/boothy/32/18040_2.png) [@Boothy](https://discourse.shapr3d.com/u/Boothy)\
**Post date:** [June 19, 2026, 4:48pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/8 "2026-06-19T16:48:14Z")

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Can you see the project?

P.s-Just because I have been on here a while doesn’t mean I know what I an doing.😂

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<div class="post-metadata">

**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [June 19, 2026, 4:49pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/9 "2026-06-19T16:49:01Z")

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> [@Boothy](#):
>
> Can you see the project?

I’ve sent the access request.

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<div class="post-metadata">

**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [June 19, 2026, 4:54pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/10 "2026-06-19T16:54:06Z")

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> [@Boothy](#):
>
> Can you see the project?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/4/9/4924c5d915f272ffe00afdb180fa9c0d53e99eaa.jpeg)

Looks like you trying to give me only view access 🙂

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<div class="post-metadata">

**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [June 19, 2026, 5:04pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/11 "2026-06-19T17:04:14Z")

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<div class="post-metadata">

**Author:** ![Boothy](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/boothy/32/18040_2.png) [@Boothy](https://discourse.shapr3d.com/u/Boothy)\
**Post date:** [June 19, 2026, 5:10pm UTC](https://discourse.shapr3d.com/t/bicycle-stay/41090/12 "2026-06-19T17:10:00Z")

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Absolute legend, thank you very much sir 🫡