# Model distorts when using logical operators

**URL:** <https://discourse.slicer.org/t/model-distorts-when-using-logical-operators/18576>\
**Category:** Support\
**Tags:** segmentation, dicom\
**Created:** [July 8, 2021, 12:09pm UTC](https://discourse.slicer.org/t/model-distorts-when-using-logical-operators/18576 "2021-07-08T12:09:23Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [July 8, 2021, 9:57pm UTC](https://discourse.slicer.org/t/model-distorts-when-using-logical-operators/18576/2 "2021-07-08T21:57:17Z")

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This thread should help:

> [@New experimental feature: Boolean operations (union, intersection, difference) on meshes](https://discourse.slicer.org/t/new-experimental-feature-boolean-operations-union-intersection-difference-on-meshes/16048):
>
> We have added a new module - Combine models - to Sandbox extension to compute union, intersection, or subtraction operations on models (surface meshes). This can be used to construct surgical guides and various other patient-specific devices by combining patient-specific meshes with CAD-designed parts. See short demo here: [[Combine patient and CAD models in 3D Slicer using union/intersection/difference operations] ](https://www.youtube.com/watch?v=2MOAk2oNbKw) Although Segment Editor can also combine models using Logical oper…

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_[View the full topic](https://discourse.slicer.org/t/model-distorts-when-using-logical-operators/18576)._