# .stl file uploaded does not appear as a "volume"

**URL:** <https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114>\
**Category:** Support\
**Tags:** registration, dicom, stl\
**Created:** [June 7, 2018, 2:51pm UTC](https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114 "2018-06-07T14:51:11Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![DavideBassano](https://avatars.discourse-cdn.com/v4/letter/d/57b2e6/32.png) [@DavideBassano](https://discourse.slicer.org/u/DavideBassano)\
**Post date:** [June 7, 2018, 2:51pm UTC](https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114/1 "2018-06-07T14:51:11Z")

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Hi,

my .stl file is not considered a volume in the “volume” module and neither in the “landmark registration” module.  
Why? Is there a way to solve this problem?

Pictures are following to explain better my problem:

I uploaded a DICOM data and a .stl file:

 ![1](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/1/d15896e3993861cf951431d77ab77a8e516ad2a6.jpeg)

 ![2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/a/d/ad1e00b0350bb69aeed05d27d6a63cf2cb9ee523.jpeg)  
(if a select ‘volume’ instead of ‘model’ in description, it doesn’t show the volume)

The red volume is the dicom data and the grey one is the .stl data:

 ![3](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/6/d626fd1e1b6a37e5beec54a84401dd94cf7ea335.jpeg)

In ‘volumes’ module, the stl volume does not appear ('‘unnamed series’ is the dicom data).

 ![4](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/4/64c9344dec818e9f969d7b1944529647c6d412c0.jpeg)

Thanks for your help,  
Best regards,

Davide

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [June 7, 2018, 6:37pm UTC](https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114/2 "2018-06-07T18:37:11Z")

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Hi Davide -

What you would need to do is import the STL as a

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/2/d2804936f8d7b074e333318882f4ba7cf25371fd.jpeg)

Then select it in the Segmentations module:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/7/5715cbe8c30670e5afe7ac1adba1be06b73983d6.jpeg)

Then export to a labelmap:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/f/ef6013fc61993e078eccb16d7b63c6bbe6b8a469.jpeg)

From there you can use the labelmap with LandmarkRegistration.

HTH,  
Steve

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**Author:** ![DavideBassano](https://avatars.discourse-cdn.com/v4/letter/d/57b2e6/32.png) [@DavideBassano](https://discourse.slicer.org/u/DavideBassano)\
**Post date:** [June 8, 2018, 7:00am UTC](https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114/3 "2018-06-08T07:00:56Z")

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Hi Steve,

thank you for your answers, but I have a problem: I can’t import my STL as “segmentation”.

 ![IMG_20180608_085747](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/0/d0672ac77d9a839d769adad8ea3c91e37695db68.jpeg)

How is It possible?

Thanks,  
Cheers,

Davide

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [June 8, 2018, 7:15am UTC](https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114/4 "2018-06-08T07:15:52Z")

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To convert your stl to a segmentation, you need to use the segmentation module import/export

Mail]([https://go.microsoft.com/fwlink/?LinkId=550986](https://go.microsoft.com/fwlink/?LinkId=550986)) for Windows 10

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**Author:** ![Fang](https://avatars.discourse-cdn.com/v4/letter/f/96bed5/32.png) [@Fang](https://discourse.slicer.org/u/Fang)\
**Post date:** [June 8, 2018, 10:59am UTC](https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114/5 "2018-06-08T10:59:57Z")

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Hi,

I can export the labelmap as the suggestion from Steve’s.  
However, I got a problem which it does not show any image as figure below this.

 ![Capture](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/2/62159c8ecddfc97cce68ffc1c1e1b7f5e55354cb.jpeg)

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**Author:** ![Fang](https://avatars.discourse-cdn.com/v4/letter/f/96bed5/32.png) [@Fang](https://discourse.slicer.org/u/Fang)\
**Post date:** [June 8, 2018, 11:18am UTC](https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114/6 "2018-06-08T11:18:33Z")

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Hi,

That my faults. It already appeared.  
But, I still cannot use the pre-structure function.  
I desire to segment each part of the tooth.

 ![Capture1](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/a/d/ad5f3d85e0e47d99de49fd616490511cf1d86b91.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:** [June 8, 2018, 2:52pm UTC](https://discourse.slicer.org/t/stl-file-uploaded-does-not-appear-as-a-volume/3114/7 "2018-06-08T14:52:57Z")

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It should not be necessary to use the legacy Editor module anymore. It is replaced by the Segment editor module.

See follow-up in this topic: [Why I cannot Per-Structure Volume](https://discourse.slicer.org/t/why-i-cannot-per-structure-volume/3124)