# I can't model this relatively simple shape.

**URL:** <https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453>\
**Category:** Modeling Questions\
**Created:** [September 19, 2025, 12:18pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453 "2025-09-19T12:18:26Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![JulienFauv](https://avatars.discourse-cdn.com/v4/letter/j/ecccb3/32.png) [@JulienFauv](https://discourse.shapr3d.com/u/JulienFauv)\
**Post date:** [September 19, 2025, 12:18pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/1 "2025-09-19T12:18:26Z")

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I want to create a shape that goes from a rounded square base to a circle following a curve. But Shapr3D won’t do that, and don’t know how to achieve it.

 ![Screenshot 2025-09-18 at 21.41.58](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/a/e/ae339617713111e76272c6401cc5796e44c993e6.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:** [September 19, 2025, 12:20pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/2 "2025-09-19T12:20:11Z")

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Divide the flat sketches along the guidelines. So your sketch will look like X in the middle for both top and bottom.

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**Author:** ![jean-philippe2](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/jean-philippe2/32/27353_2.png) [@jean-philippe2](https://discourse.shapr3d.com/u/jean-philippe2)\
**Post date:** [September 19, 2025, 1:45pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/3 "2025-09-19T13:45:08Z")

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Hi,  
I think the points of your guides are not properly hooked.  
I put in screenshot the same example that works.  
But I’m not saying it’s the best way to get what you want.

 ![Capture d’écran 2025-09-19 à 15.38.56](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/6/d/6d45f3bf6d29128ae9937d9e17dd303b80c3c8ec.jpeg)

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**Author:** ![JulienFauv](https://avatars.discourse-cdn.com/v4/letter/j/ecccb3/32.png) [@JulienFauv](https://discourse.shapr3d.com/u/JulienFauv)\
**Post date:** [September 20, 2025, 4:42pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/4 "2025-09-20T16:42:50Z")

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Thank you for your help, Jean-Phillipe.

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<div class="post-metadata">

**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [September 20, 2025, 6:51pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/5 "2025-09-20T18:51:08Z")

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I also think there is a loft bug, I was originally going post this before, but couldn’t repeat the loft.

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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:** [September 20, 2025, 8:39pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/6 "2025-09-20T20:39:26Z")

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FWIW, here’s a variation with twice the number of guide lines.

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<div class="post-metadata">

**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [September 20, 2025, 9:54pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/7 "2025-09-20T21:54:05Z")

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Your kinda helping Shapr to make it work, but in other software that shouldn’t be necessary, maybe just Shaprs limitations or a loft bug?

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<div class="post-metadata">

**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [September 21, 2025, 7:18am UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/8 "2025-09-21T07:18:58Z")

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Actually in my case it was an user error.

The order was wrong.

Correct  
Select sketch than second sketch hit loft and add guides.

VS

Wrong  
Select both top and bottom sketch, loft and add loft than guides (how it works in different software). 🤦

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<div class="post-metadata">

**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:** [September 21, 2025, 2:53pm UTC](https://discourse.shapr3d.com/t/i-cant-model-this-relatively-simple-shape/39453/9 "2025-09-21T14:53:18Z")

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> The order was wrong.
> 
> Correct  
> Select sketch than second sketch hit loft and add guides.

I selected the bottom sketch, then the guide lines followed by the top sketch. Worked fine.