# Models degrade when do subtract segment editor

**URL:** <https://discourse.slicer.org/t/models-degrade-when-do-subtract-segment-editor/36229>\
**Category:** Support\
**Created:** [May 17, 2024, 2:52pm UTC](https://discourse.slicer.org/t/models-degrade-when-do-subtract-segment-editor/36229 "2024-05-17T14:52:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ethan\_Penn](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ethan_penn/32/69847_2.png) [@Ethan\_Penn](https://discourse.slicer.org/u/Ethan_Penn)\
**Post date:** [May 17, 2024, 2:52pm UTC](https://discourse.slicer.org/t/models-degrade-when-do-subtract-segment-editor/36229/1 "2024-05-17T14:52:28Z")

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when I try to do the subtract feature on the segment editor, my models go from being really crisp and smooth to being a bit wrinkly, curvy edges etc. I have tried to fix this with smoothing but it does not really do the trick. Thanks so much

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<div class="post-metadata">

**Author:** ![Ethan\_Penn](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ethan_penn/32/69847_2.png) [@Ethan\_Penn](https://discourse.slicer.org/u/Ethan_Penn)\
**Post date:** [May 17, 2024, 3:56pm UTC](https://discourse.slicer.org/t/models-degrade-when-do-subtract-segment-editor/36229/2 "2024-05-17T15:56:32Z")

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also smoothing takes a very long time