# How to set Segmentation for a .stl while BranchClipper in VMTK?

**URL:** <https://discourse.slicer.org/t/how-to-set-segmentation-for-a-stl-while-branchclipper-in-vmtk/36747>\
**Category:** VMTK\
**Tags:** vmtk\
**Created:** [June 13, 2024, 7:53am UTC](https://discourse.slicer.org/t/how-to-set-segmentation-for-a-stl-while-branchclipper-in-vmtk/36747 "2024-06-13T07:53:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gpu](https://avatars.discourse-cdn.com/v4/letter/g/e47c2d/32.png) [@gpu](https://discourse.slicer.org/u/gpu)\
**Post date:** [June 13, 2024, 7:53am UTC](https://discourse.slicer.org/t/how-to-set-segmentation-for-a-stl-while-branchclipper-in-vmtk/36747/1 "2024-06-13T07:53:18Z")

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how to set Segmentation for a .stl while BranchClipper in VMTK?

1. load a .stl file into 3D Slicer;
2. Extract Centerlines by VMTK;
3. while Branch Clipper, it’s not able to set the Segmentation which seems must be set.  
Thanks!

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<div class="post-metadata">

**Author:** ![chir.set](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chir.set/32/66982_2.png) [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Post date:** [July 1, 2024, 3:30pm UTC](https://discourse.slicer.org/t/how-to-set-segmentation-for-a-stl-while-branchclipper-in-vmtk/36747/2 "2024-07-01T15:30:24Z")

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Right click on the STL model in the ‘Data’ module and convert it to a ‘Segmentation’.