# Reverse a rounder-over

**URL:** <https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220>\
**Category:** Modeling Questions\
**Created:** [June 9, 2021, 3:40pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220 "2021-06-09T15:40:24Z")\
**Posts on this page:** 20\
**Page:** 1

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**Author:** ![UCS308](https://avatars.discourse-cdn.com/v4/letter/u/7ab992/32.png) [@UCS308](https://discourse.shapr3d.com/u/UCS308)\
**Post date:** [June 9, 2021, 3:40pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/1 "2021-06-09T15:40:24Z")

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I created a round-over using the chamfer tool. Left the app and now need to reverse that round-over. Reselecting the edge and trying to reverse does not bring the edge back to flat. Is there a way to do this that I am missing?

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**Author:** ![NathanD](https://avatars.discourse-cdn.com/v4/letter/n/dec6dc/32.png) [@NathanD](https://discourse.shapr3d.com/u/NathanD)\
**Post date:** [June 9, 2021, 4:05pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/2 "2021-06-09T16:05:53Z")

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Try selecting the fillet edge and deleting 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:** [June 9, 2021, 4:36pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/3 "2021-06-09T16:36:44Z")

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You tried undo and selecting the filleted face and deleting it?

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**Author:** ![UCS308](https://avatars.discourse-cdn.com/v4/letter/u/7ab992/32.png) [@UCS308](https://discourse.shapr3d.com/u/UCS308)\
**Post date:** [June 10, 2021, 9:37am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/4 "2021-06-10T09:37:42Z")

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Undo does not seem to work after you close and re-open the app. And deleting the face results in a “Wound won’t heal” error.

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**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [June 10, 2021, 9:45am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/5 "2021-06-10T09:45:19Z")

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Hi!

Could you show us a screenshot / video?

The chamferted/filleted face should be delete-able by selecting it and pressing delete, even after app restart. I suspect another face causing the issue with it.

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**Author:** ![UCS308](https://avatars.discourse-cdn.com/v4/letter/u/7ab992/32.png) [@UCS308](https://discourse.shapr3d.com/u/UCS308)\
**Post date:** [June 10, 2021, 9:49am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/6 "2021-06-10T09:49:36Z")

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This portion is 4 bodies aligned.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/6/6d24952714b6a3d8d41816342ba0c7cf8c9ec040.jpeg)

Here is the single body.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/c/c2ee681a59fa5806399eb763282765d077ff8eca.jpeg)

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<div class="post-metadata">

**Author:** ![UCS308](https://avatars.discourse-cdn.com/v4/letter/u/7ab992/32.png) [@UCS308](https://discourse.shapr3d.com/u/UCS308)\
**Post date:** [June 10, 2021, 9:52am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/7 "2021-06-10T09:52:49Z")

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The left portion has a flat section just before the round-over begins, that face can be deleted. But when I try to delete the round-over and get back to just a flat face, delete fails.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/a/ab31cd2b81182020adba9bec10501a0c8ab89fe5.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/728e8bcd4a7f993254ffb9f4452b0252814c1826.jpeg)

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**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [June 10, 2021, 10:13am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/8 "2021-06-10T10:13:49Z")

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I see, the problem is the multiple filleted faces, meeting eachother. That indeed cannot be deleted:

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/a/a31c031c25560407ecc3905e58f7c89be45ef275.mov](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/a/a31c031c25560407ecc3905e58f7c89be45ef275.mov)

You can work around it by subtracting this part with another body to get the straight face you want, and offset it back to the correct size.

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**Author:** ![UCS308](https://avatars.discourse-cdn.com/v4/letter/u/7ab992/32.png) [@UCS308](https://discourse.shapr3d.com/u/UCS308)\
**Post date:** [June 10, 2021, 10:20am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/9 "2021-06-10T10:20:46Z")

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Perfect. Thanks!

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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:** [June 10, 2021, 2:08pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/10 "2021-06-10T14:08:17Z")

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Not sure if you tried this, but if you select all four chamfers first and then do the delete it might work.

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**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [June 10, 2021, 2:12pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/11 "2021-06-10T14:12:21Z")

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Yes, also works, as long as he finds all the related faces. Nice tip!

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**Author:** ![TheBum](https://avatars.discourse-cdn.com/v4/letter/t/eada6e/32.png) [@TheBum](https://discourse.shapr3d.com/u/TheBum)\
**Post date:** [June 10, 2021, 2:59pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/12 "2021-06-10T14:59:55Z")

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I’ve had to do what TigerMike said with some internal chamfers on an enclosure I designed. Sometimes you just have to keep selecting chamfers/fillets until the delete works.

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**Author:** ![Peter\_b](https://avatars.discourse-cdn.com/v4/letter/p/85f322/32.png) [@Peter\_b](https://discourse.shapr3d.com/u/Peter_b)\
**Post date:** [January 24, 2023, 10:11am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/13 "2023-01-24T10:11:14Z")

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I also have a chamfer I can not change once done. If I click the now rounded face it jumps to Offset and if I click Chamfer it highlights ther perimeter.  
Is this a bug? Happens at another place of the model also.

 ![1](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/e/3/e3246cc6207a64b062028d2d5cda0c09a31533cd.jpeg)

 ![2](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/e/5/e5875ab97439672df15063d7b262df2b1ac5ac72.jpeg)

 ![3](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/2/2/22a91d277f42af20d5a721d74a340534d1f332fe.jpeg)

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<div class="post-metadata">

**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [January 24, 2023, 10:17am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/14 "2023-01-24T10:17:49Z")

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No, once created, it cannot be modified as a fillet. Since Shap3D uses direct modeling, once a face is created, it doesn’t retain the history of how it was created. In this case, it’s just a rounded face, not a “fillet” anymore.

The solution is to select and delete it, and apply the fillet again.

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<div class="post-metadata">

**Author:** ![Peter\_b](https://avatars.discourse-cdn.com/v4/letter/p/85f322/32.png) [@Peter\_b](https://discourse.shapr3d.com/u/Peter_b)\
**Post date:** [January 24, 2023, 10:25am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/15 "2023-01-24T10:25:47Z")

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Laci, it can not be deleted that is what is bothering me and why I think it’s a bug.

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**Author:** ![Peter\_b](https://avatars.discourse-cdn.com/v4/letter/p/85f322/32.png) [@Peter\_b](https://discourse.shapr3d.com/u/Peter_b)\
**Post date:** [January 24, 2023, 10:31am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/16 "2023-01-24T10:31:10Z")

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here is the shapr file

[test.shapr](https://discourse.shapr3d.com/uploads/short-url/pNe26VrB4FGOzXzBDaoQBWGf2ij.shapr) (227.1 KB)

The same happens to the opposite side of the clamp

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<div class="post-metadata">

**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [January 24, 2023, 11:33am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/17 "2023-01-24T11:33:26Z")

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In that case, you can cut off the unnecessary part, then use offset face.

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<div class="post-metadata">

**Author:** ![Peter\_b](https://avatars.discourse-cdn.com/v4/letter/p/85f322/32.png) [@Peter\_b](https://discourse.shapr3d.com/u/Peter_b)\
**Post date:** [January 24, 2023, 11:46am UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/18 "2023-01-24T11:46:38Z")

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Thank you Laci, that lets me go on with the model but looks like a workaround to me, to something that should be a simple delete? Just wondering how this happened and why this face behaves differently.

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<div class="post-metadata">

**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [January 24, 2023, 1:37pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/19 "2023-01-24T13:37:10Z")

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Currently we can’t heal the geometry in this case. If there would be even a small part of the original face left, it would be possible:

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**Author:** ![Stephen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/stephen/32/16350_2.png) [@Stephen](https://discourse.shapr3d.com/u/Stephen)\
**Post date:** [January 25, 2023, 5:59pm UTC](https://discourse.shapr3d.com/t/reverse-a-rounder-over/13220/20 "2023-01-25T17:59:26Z")

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That’s worth remembering Laci, thanks. Leaving even a tiny bit of the original face gives us a way out 👍
