# How to export stl file for each structure?

**URL:** <https://discourse.slicer.org/t/how-to-export-stl-file-for-each-structure/13695>\
**Category:** Support\
**Created:** [September 25, 2020, 10:44am UTC](https://discourse.slicer.org/t/how-to-export-stl-file-for-each-structure/13695 "2020-09-25T10:44:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Taehyeong](https://avatars.discourse-cdn.com/v4/letter/t/90db22/32.png) [@Taehyeong](https://discourse.slicer.org/u/Taehyeong)\
**Post date:** [September 25, 2020, 10:44am UTC](https://discourse.slicer.org/t/how-to-export-stl-file-for-each-structure/13695/1 "2020-09-25T10:44:24Z")

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Hello

I have some problem using the 3D slicer  
Trying to export contoured structures in segments to STL files.

I want to create an STL file for each OAR such as Bone stl file, brain stl file, eye ball stl file…  
But it’s not working well. Only one large STL file containing bones, eyeballs, and brains is exported… Please tell me how to create each STL file for each OAR.  
If you reply to my email ([dnssll1009@naver.com](mailto:dnssll1009@naver.com)), I will be able to check it easily, thank you.

Thank you.

Capture|690x367](upload://s3s4i2sDE6yzTxxNaOunvxbP99Z.jpeg)

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<div class="post-metadata">

**Author:** ![Taehyeong](https://avatars.discourse-cdn.com/v4/letter/t/90db22/32.png) [@Taehyeong](https://discourse.slicer.org/u/Taehyeong)\
**Post date:** [September 25, 2020, 10:45am UTC](https://discourse.slicer.org/t/how-to-export-stl-file-for-each-structure/13695/2 "2020-09-25T10:45:14Z")

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![Capture](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/4/c4a0c9865c9d1920d4d04dfad7ef6a064164ffc7.jpeg)

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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:** [September 25, 2020, 2:07pm UTC](https://discourse.slicer.org/t/how-to-export-stl-file-for-each-structure/13695/3 "2020-09-25T14:07:26Z")

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Uncheck “Merge into single file” option if you want don’t want all segments to be exported as one single merged STL file.

> If you reply to my email …, I will be able to check it easily, thank you.

Discussions should not happen in email for many reasons. You get email notification about each answer automatically.