# Creating a circle divert on a curved surface
**URL:** https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109
**Category:** Modeling Questions
**Created:** [June 25, 2026, 3:41pm UTC](https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109 "2026-06-25T15:41:59Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@sam1](https://discourse.shapr3d.com/u/sam1)
#### Post date: [June 25, 2026, 3:41pm UTC](https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109/1 "2026-06-25T15:41:59Z")
Hi,
Does anyone know how i can achieve this curved sphere divet on a curved surface.
Thanks in advance
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### Author:  [@DrKronos](https://discourse.shapr3d.com/u/DrKronos)
#### Post date: [June 25, 2026, 3:45pm UTC](https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109/2 "2026-06-25T15:45:24Z")
Create some spheres by revolving a half-circle sketch and then subtract them from your base object.
You just need to create one sphere, then copy it around, scale them and move them to your liking.
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### Author:  [@sam1](https://discourse.shapr3d.com/u/sam1)
#### Post date: [June 25, 2026, 3:48pm UTC](https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109/3 "2026-06-25T15:48:43Z")
Hi,
Thanks for your suggestions. I have tried that. The problem is by subtracting the sphere from a curved surface you end up with a oval type shape.
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### Author:  [@DrKronos](https://discourse.shapr3d.com/u/DrKronos)
#### Post date: [June 25, 2026, 3:52pm UTC](https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109/4 "2026-06-25T15:52:29Z")
The easy way to fix this would just be to squish your spheres a bit along the z axis. The way to get it absolutely perfect would probably be to use the wrap tool to project a circle sketch on your base object, then project it back on a construction plane to get the correct distortion for you revolved sphere.
There’s probably as easier way, let me think about it..
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### Author:  [@sam1](https://discourse.shapr3d.com/u/sam1)
#### Post date: [June 25, 2026, 3:53pm UTC](https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109/5 "2026-06-25T15:53:41Z")
> [@DrKronos](#):
>
> ld probably be to use the wrap tool to project a circle sketch on your base object, then p
Yeah i think using the projection tool is the way to go, i’ll have a play around with it Thanks
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### Author:  [@sam1](https://discourse.shapr3d.com/u/sam1)
#### Post date: [June 25, 2026, 4:41pm UTC](https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109/6 "2026-06-25T16:41:30Z")
Ok so your method of working out the distortion to squish the cyclinder does work. Its a bit labour intesive. I would hope there is a better way to do this.
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### Author:  [@DrKronos](https://discourse.shapr3d.com/u/DrKronos)
#### Post date: [June 25, 2026, 4:44pm UTC](https://discourse.shapr3d.com/t/creating-a-circle-divert-on-a-curved-surface/41109/7 "2026-06-25T16:44:00Z")
Well there’s a mathematical way to work out the distortion factor of a 2d projection unto a cylinder. Then you could simply scale your sphere along the z axis by that factor.
I really don’t know the formula off the top of my head, but this might actually be something a chatbot might be able to help fast.