# How can i create a ribbed surface on a rounded object

**URL:** <https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482>\
**Category:** Modeling Questions\
**Created:** [March 13, 2026, 12:31pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482 "2026-03-13T12:31:28Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![Thunderpal](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/thunderpal/32/35174_2.png) [@Thunderpal](https://discourse.shapr3d.com/u/Thunderpal)\
**Post date:** [March 13, 2026, 12:31pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/1 "2026-03-13T12:31:28Z")

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Hi Together,

I’m quite new to Shapr3D and have some problems for creating surfaces to objects.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/4/f/4f66eba91b8364b0ec9fd2aebd5acea9d893867c.jpeg)

I’d like to make such a ribbed surface but all my tries failed:

I tried making a projection of a sketch to the surface but it will only extrude to the same hight around the opject and when i then try to fillet is not the result i want. also when i try to pattern this around the model it always tells me that the resulting body is invalid.

thanks in advance for your inputs.

Greetings from austria

Philipp

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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:** [March 13, 2026, 3:02pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/2 "2026-03-13T15:02:02Z")

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Think of it as 5 bodies.

To make the main body: Sketch the bottom shape (circles around a larger circle, trim tool the unneeded line segment bits away). Then use the move tool to copy the sketch while moving it up to about the mid section AND then scale it larger. Repeat that Copy/Move again to the top AND scale it smaller. Then use the loft tool to loft the 3 sketches.

Do the same for the head section.

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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:** [March 13, 2026, 3:05pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/3 "2026-03-13T15:05:09Z")

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Another similar method that you can look at here:

> [@Folded-like shape](https://discourse.shapr3d.com/t/folded-like-shape/34979/8):
>
> I imported the twisted star shape from Corel Draw as a DFX. I selected it and used the “move tool” to copy, move it up and then rotate the copy. I repeated that several times, also using the “scale tool” to scale each copy. Then I selected the bottom star shape and “lofted” it to the other copies above it. I was simply testing shapr at the time to see what it could do and turned out pretty good so I printed it

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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:** [March 13, 2026, 3:06pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/4 "2026-03-13T15:06:53Z")

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I used the first method here [Planter/Pot](https://discourse.shapr3d.com/t/planter-pot/24615)

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**Author:** ![Thunderpal](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/thunderpal/32/35174_2.png) [@Thunderpal](https://discourse.shapr3d.com/u/Thunderpal)\
**Post date:** [March 14, 2026, 4:47am UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/5 "2026-03-14T04:47:19Z")

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> [@Oregonerd](#):
>
> ve tool to copy the sketch while moving it up to about the mid section AND then scale it larger. Repeat th

Hi. Thanks for the imput. Lofting is working, but it will create ony a straight connection between the sketches. is it possible to add a radius to the lofted elements?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/5/a/5ad79b34a800735a44c1b0e0dee3290ff0e126d9.jpeg)

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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:** [March 14, 2026, 5:50am UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/6 "2026-03-14T05:50:27Z")

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I didn’t use Loft. I used Revolve, Sweep, Replace Face, and the Pattern 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:** [March 14, 2026, 6:36am UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/7 "2026-03-14T06:36:56Z")

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> [@Thunderpal](#):
>
> but it will create ony a straight connection between the sketches

Make it as one loft. On your image you definitely did 4 separate lofts.

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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:** [March 14, 2026, 2:42pm UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/8 "2026-03-14T14:42:23Z")

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Totally agree that one continuous loft is the way to go for that particular example. Getting back to the original object, using Loft would be difficult to make this feature in my opinion.

 ![object](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/2/2/222e42cf95ef50f04be2628d3ea21c65c38efc70.jpeg)

Therefore, I suggest using Revolve, Sweep and Pattern.

(Alex, this reply was meant to go to @Thunderpal where he attempted using Loft)

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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:** [March 15, 2026, 6:28am UTC](https://discourse.shapr3d.com/t/how-can-i-create-a-ribbed-surface-on-a-rounded-object/40482/9 "2026-03-15T06:28:08Z")

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> [@TigerMike](#):
>
> using Loft would be difficult

Not so difficult 🙂

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/1/5/1572f00c5e7d2cd21c023be6a0560460c04bd90b.jpeg)