# Show 3D does not work after editing the segmentation

**URL:** <https://discourse.slicer.org/t/show-3d-does-not-work-after-editing-the-segmentation/18655>\
**Category:** Support\
**Tags:** 3d-model\
**Created:** [July 12, 2021, 9:50pm UTC](https://discourse.slicer.org/t/show-3d-does-not-work-after-editing-the-segmentation/18655 "2021-07-12T21:50:13Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![bywbilly](https://avatars.discourse-cdn.com/v4/letter/b/7bcc69/32.png) [@bywbilly](https://discourse.slicer.org/u/bywbilly)\
**Post date:** [July 12, 2021, 9:50pm UTC](https://discourse.slicer.org/t/show-3d-does-not-work-after-editing-the-segmentation/18655/1 "2021-07-12T21:50:13Z")

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Hi,

I have a CT scan and its segmentation. I can create a 3D view of the segmentation through the show 3D of the segmentation editor module.

However, when I create a new label using the threshold method in the segmentation editor module, I cannot render the 3D view ever. Moreover, after I did this, I cannot render a segmentation that I can render before. I have to reopen slicer app to do the show 3D function.

And I checked the log, there are no warning/error messages. Also, I am sure I click the button to make sure the 3D model is in the middle. And I also try to turn the surface smooth off but it didn’t work.

I am wondering do you have any idea why? My slicer version is 4.11.

Thanks!

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [July 13, 2021, 1:55am UTC](https://discourse.slicer.org/t/show-3d-does-not-work-after-editing-the-segmentation/18655/2 "2021-07-13T01:55:29Z")

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Please test if you can reproduce this issue with the latest Slicer Preview Release.

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**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [July 13, 2021, 4:19pm UTC](https://discourse.slicer.org/t/show-3d-does-not-work-after-editing-the-segmentation/18655/3 "2021-07-13T16:19:17Z")

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Did you maybe select the overwrite option when you used the threshold function to create the new, additional segment?

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**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [July 13, 2021, 4:31pm UTC](https://discourse.slicer.org/t/show-3d-does-not-work-after-editing-the-segmentation/18655/4 "2021-07-13T16:31:44Z")

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I just tried the whole thing with “allow overlap” and 3.11 as well as the latest slicer build and did not get such a problem.

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/1/f1e8cfe61d9f1dc38ab9c4466e22a54a8daee9e2.png)