# Slicing a STL file

**URL:** <https://discourse.slicer.org/t/slicing-a-stl-file/40403>\
**Category:** Support\
**Created:** [November 27, 2024, 11:34am UTC](https://discourse.slicer.org/t/slicing-a-stl-file/40403 "2024-11-27T11:34:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mayaambar](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mayaambar/32/76746_2.png) [@mayaambar](https://discourse.slicer.org/u/mayaambar)\
**Post date:** [November 27, 2024, 11:34am UTC](https://discourse.slicer.org/t/slicing-a-stl-file/40403/1 "2024-11-27T11:34:20Z")

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Hello  
I’m navigating in a heart model with a cathether and I’m using a STL file of the heart model in 3d slicer.  
right now im using a low opacity of the model to see what im doing, and I wanted to know if there is a way to cut the STL in the 3d slicer , so we could see better what we are doing.  
that would really help us  
thank you again for all your previous help.  
Maya

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [November 27, 2024, 12:04pm UTC](https://discourse.slicer.org/t/slicing-a-stl-file/40403/2 "2024-11-27T12:04:03Z")

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You can use the Plane cut or ROI cut tools in the Dynamic Modeler module. Or you can clip the model using a slice plane in the Models module.

FYI a completely revamped clipping feature will be implemented in Slicer soon, and I suggest using that once it is released.

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**Author:** ![mayaambar](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mayaambar/32/76746_2.png) [@mayaambar](https://discourse.slicer.org/u/mayaambar)\
**Post date:** [November 27, 2024, 12:13pm UTC](https://discourse.slicer.org/t/slicing-a-stl-file/40403/3 "2024-11-27T12:13:12Z")

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Thank you so much. I will try what you suggested until the release of the new module.