# Why did it flip?

**URL:** <https://discourse.shapr3d.com/t/why-did-it-flip/9925>\
**Category:** Modeling Questions\
**Created:** [November 30, 2020, 12:23am UTC](https://discourse.shapr3d.com/t/why-did-it-flip/9925 "2020-11-30T00:23:58Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![realdrogo](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/realdrogo/32/8459_2.png) [@realdrogo](https://discourse.shapr3d.com/u/realdrogo)\
**Post date:** [November 30, 2020, 12:23am UTC](https://discourse.shapr3d.com/t/why-did-it-flip/9925/1 "2020-11-30T00:23:58Z")

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Hey gang,

Sweeping one sketch plane around another and on the last segment the sweeped (swept?) shape inverts itself, away from its origin sketch.

Any thoughts on why this happened?

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/3/379a6f6bc2626b7c90d6c36ef92445500a773a8c.mov](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/3/379a6f6bc2626b7c90d6c36ef92445500a773a8c.mov)
 [sweep trial 3.shapr](https://discourse.shapr3d.com/uploads/short-url/xkMpxXl9PkQ0rePPS4ow2PARRpS.shapr) (372 KB)

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**Author:** ![KPeter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/kpeter/32/7644_2.png) [@KPeter](https://discourse.shapr3d.com/u/KPeter)\
**Post date:** [November 30, 2020, 7:59am UTC](https://discourse.shapr3d.com/t/why-did-it-flip/9925/2 "2020-11-30T07:59:59Z")

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Hi @realdrogo,

That is weird. At first, I thought you were creating the solid arcs one by one, that way it could happen because the cross-section is on the other side of the rail but I saw that you probably did it all together.  
Can you please tell me what Shapr3D version are you using? I tried to recreate the issue on 3.54 (542) and it works as it should

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**Author:** ![realdrogo](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/realdrogo/32/8459_2.png) [@realdrogo](https://discourse.shapr3d.com/u/realdrogo)\
**Post date:** [November 30, 2020, 2:43pm UTC](https://discourse.shapr3d.com/t/why-did-it-flip/9925/3 "2020-11-30T14:43:46Z")

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That is the same version I’m using.  
Strange, uh?

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**Author:** ![KPeter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/kpeter/32/7644_2.png) [@KPeter](https://discourse.shapr3d.com/u/KPeter)\
**Post date:** [November 30, 2020, 3:35pm UTC](https://discourse.shapr3d.com/t/why-did-it-flip/9925/4 "2020-11-30T15:35:09Z")

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hmm. May I ask you to record the steps of the solid body creation with tutorial mode on? It can be turned on if you go to the iPad’s Settings, scroll down to Shapr3D and turn the Tutorial Mode on. As a result I can see where you tap with your fingers and the pencil.

I tried to get the flipped result and I could but never with the last curve you have selected.

Thanks,

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**Author:** ![realdrogo](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/realdrogo/32/8459_2.png) [@realdrogo](https://discourse.shapr3d.com/u/realdrogo)\
**Post date:** [November 30, 2020, 4:03pm UTC](https://discourse.shapr3d.com/t/why-did-it-flip/9925/5 "2020-11-30T16:03:17Z")

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Hahahaha  
I tried half a dozen times to recreate the oddity and I couldn’t do it.  
Oh well if it works, it works.

Thanks, KPeter