# Stl file conversion

**URL:** <https://discourse.slicer.org/t/stl-file-conversion/9411>\
**Category:** Support\
**Created:** [December 6, 2019, 1:48pm UTC](https://discourse.slicer.org/t/stl-file-conversion/9411 "2019-12-06T13:48:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![arun\_gopinathan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/arun_gopinathan/32/5327_2.png) [@arun\_gopinathan](https://discourse.slicer.org/u/arun_gopinathan)\
**Post date:** [December 6, 2019, 1:48pm UTC](https://discourse.slicer.org/t/stl-file-conversion/9411/1 "2019-12-06T13:48:53Z")

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Operating system: Windows 10  
Slicer version: 4.10.2  
Expected behavior: I need to export the 3D model to .stl file  
Actual behavior: No option

Hello,  
I have started to use 3D Slicer for the past 3 days. I need to convert CT .jpg image file to a 3d model. after I have converted, I was unable to save it in .stl file format. There is no stl option have come.

Please kindly suggest me the suitable way to do it. I tried many youtube tutorials but no use.

Awaiting your esteemed support.

With Regards,  
Arun

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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:** [December 6, 2019, 3:15pm UTC](https://discourse.slicer.org/t/stl-file-conversion/9411/2 "2019-12-06T15:15:55Z")

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Hi Arun -

Did you try the tutorials here:

[https://www.slicer.org/wiki/Documentation/4.10/Training#Slicer4\_Image\_Segmentation](https://www.slicer.org/wiki/Documentation/4.10/Training#Slicer4_Image_Segmentation)

Which step specifically didn’t work for you?

If you start with jpgs of a CT you’ll need to use this module: [https://www.slicer.org/wiki/Documentation/4.10/Modules/VectorToScalarVolume](https://www.slicer.org/wiki/Documentation/4.10/Modules/VectorToScalarVolume)

But in general jpg is a very bad format for CT since it loses detail and is only 8 bit instead of the normal 12 bit. Try to get DICOM if you want a good model.