# Issues converting into stl in 3D slicer

**URL:** <https://discourse.slicer.org/t/issues-converting-into-stl-in-3d-slicer/9953>\
**Category:** Support\
**Tags:** segmentation, dicom\
**Created:** [January 26, 2020, 5:22am UTC](https://discourse.slicer.org/t/issues-converting-into-stl-in-3d-slicer/9953 "2020-01-26T05:22:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Getaw\_Hassen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/getaw_hassen/32/5773_2.png) [@Getaw\_Hassen](https://discourse.slicer.org/u/Getaw_Hassen)\
**Post date:** [January 26, 2020, 5:22am UTC](https://discourse.slicer.org/t/issues-converting-into-stl-in-3d-slicer/9953/1 "2020-01-26T05:22:29Z")

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I could not create stl files from CT imaged. Plese advise

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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:** [January 26, 2020, 6:04am UTC](https://discourse.slicer.org/t/issues-converting-into-stl-in-3d-slicer/9953/2 "2020-01-26T06:04:46Z")

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Read the PDF provided in the this thread

> [@Use a segmentation to create .stl file for 3D printing](https://discourse.slicer.org/t/use-a-segmentation-to-create-stl-file-for-3d-printing/541):
>
> Hello, I have been hitting my head against a wall and can’t figure out how to do this. I think there is supposed to be a tutorial on this ( [Documentation/4.6/Training - Slicer Wiki](https://www.slicer.org/wiki/Documentation/4.6/Training#Segmentation_for_3D_printing)) but the pdf tutorial file has been deleted. I have a segment that has been generated by other software that I am importing. It shows up in segmentations module: It is the red “helmet”, “roughbolusdesign” segment. This segment right now is just air. Ideally all I want to do is export the red cap vol…