# Need help with this shape

**URL:** <https://discourse.shapr3d.com/t/need-help-with-this-shape/40163>\
**Category:** Modeling Questions\
**Created:** [January 19, 2026, 12:11pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163 "2026-01-19T12:11:08Z")\
**Posts on this page:** 13\
**Page:** 1

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**Author:** ![veghbenji](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/veghbenji/32/34756_2.png) [@veghbenji](https://discourse.shapr3d.com/u/veghbenji)\
**Post date:** [January 19, 2026, 12:11pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/1 "2026-01-19T12:11:08Z")

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Hi guys,

I am looking for a solution to finish the roof of this vehicle and I can’t find any solution so far. I am very new to this app, but I tried to use the Loft tool along the edges to make this curved roof body, but it didn’t work. What could be the solution? Here you can see that I want to create something similar like on this SketchUP model.  
Thanks in advance!

I wasn’t able to attach both of the pictures here, so there you go: [https://drive.google.com/file/d/1MwvPo3WzgyLjyuveIGpdxqZ6YPZtZ6cZ/view?usp=sharing](https://drive.google.com/file/d/1MwvPo3WzgyLjyuveIGpdxqZ6YPZtZ6cZ/view?usp=sharing), [https://drive.google.com/file/d/1Wlv33hWZ-VUXKMWK7yPmny7JBmEjSLDm/view?usp=sharing](https://drive.google.com/file/d/1Wlv33hWZ-VUXKMWK7yPmny7JBmEjSLDm/view?usp=sharing)

 ![Képernyőkép 2026-01-19 130224](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/5/5/55731e4a897e80237aa4f0a618d8fdb64af8a6b2.png)

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [January 19, 2026, 4:43pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/2 "2026-01-19T16:43:00Z")

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Loft works.

From your pic, your 90° sketch is slightly away (a gap) from the body edge. No gap in mine.

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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:** [January 19, 2026, 5:04pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/3 "2026-01-19T17:04:33Z")

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Sweep won’t work?

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [January 19, 2026, 5:05pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/4 "2026-01-19T17:05:57Z")

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Just now tried it. Sweep does not work (at least with my geometry).

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [January 19, 2026, 5:12pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/5 "2026-01-19T17:12:27Z")

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Sweep only works near the outer edge. The turn at the corner would cause an intersecting body during Sweep.

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**Author:** ![veghbenji](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/veghbenji/32/34756_2.png) [@veghbenji](https://discourse.shapr3d.com/u/veghbenji)\
**Post date:** [January 19, 2026, 7:49pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/6 "2026-01-19T19:49:16Z")

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For some reason it doesn’t work, let me show you what I tried to do: [Unique Download Link | WeTransfer](https://we.tl/t-0JjOztrUug)  
Sorry, the file was to big to upload here.

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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:** [January 20, 2026, 11:58pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/7 "2026-01-20T23:58:52Z")

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I wonder if you section the cross section into 3 or 4 sections and then sweep one after the other? 🤣

I’ll try it later. Diminishing returns I think.

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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:** [January 21, 2026, 7:42am UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/8 "2026-01-21T07:42:23Z")

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> [@veghbenji](#):
>
> For some reason it doesn’t work

Select faces and guide lines before you start lofting. Alternatively you can add guide lines from history by editing loft action.

There could be other issues. If you could share the project, we’d be able to take a closer look.

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<div class="post-metadata">

**Author:** ![veghbenji](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/veghbenji/32/34756_2.png) [@veghbenji](https://discourse.shapr3d.com/u/veghbenji)\
**Post date:** [January 21, 2026, 9:27am UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/9 "2026-01-21T09:27:28Z")

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Thank you, there you go my project file 🙂

[SGP roof.shapr](https://discourse.shapr3d.com/uploads/short-url/2xN5OOQtUnfA8OivzHmeC0Qzp0O.shapr) (5.7 MB)

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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:** [January 21, 2026, 4:30pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/10 "2026-01-21T16:30:03Z")

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> [@veghbenji](#):
>
> Thank you, there you go my project file

Well, it is not possible with existing sketches but they can be redrawn to get this result:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/8/e/8e7a8aebcb69a5e709daf95220a9a8aa3fdd5ccc.jpeg)

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<div class="post-metadata">

**Author:** ![veghbenji](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/veghbenji/32/34756_2.png) [@veghbenji](https://discourse.shapr3d.com/u/veghbenji)\
**Post date:** [January 21, 2026, 4:43pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/11 "2026-01-21T16:43:35Z")

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Wow, that is great! Can you share with me how did you do that? So next time I can do it on my own 🙂

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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:** [January 21, 2026, 5:14pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/12 "2026-01-21T17:14:59Z")

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> [@veghbenji](#):
>
> Can you share with me how did you do that?

[![](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/8/4/84f4a3bf5406c1a8a4846e8b58df189f4045cccd.jpeg "Train roof") ](https://www.youtube.com/watch?v=Xp1CuhN9W9Y)

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<div class="post-metadata">

**Author:** ![veghbenji](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/veghbenji/32/34756_2.png) [@veghbenji](https://discourse.shapr3d.com/u/veghbenji)\
**Post date:** [January 23, 2026, 8:51pm UTC](https://discourse.shapr3d.com/t/need-help-with-this-shape/40163/13 "2026-01-23T20:51:07Z")

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That is great, thank you! 🙂