# Detecting holes

**URL:** <https://discourse.slicer.org/t/detecting-holes/3534>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [July 20, 2018, 9:01am UTC](https://discourse.slicer.org/t/detecting-holes/3534 "2018-07-20T09:01:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sadjad\_Abedi](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sadjad_abedi/32/1921_2.png) [@Sadjad\_Abedi](https://discourse.slicer.org/u/Sadjad_Abedi)\
**Post date:** [July 20, 2018, 9:01am UTC](https://discourse.slicer.org/t/detecting-holes/3534/1 "2018-07-20T09:01:58Z")

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I wonder why Slicer can’t detect some small holes in my model. I rose the kernel size even to 25 mm and it takes about 40 min to complete, but the holes remained. I also use some different software such as MeshLab, MeshMixer, and Graphite, but they also couldn’t detect the holes.  
Any help would be appreciated.

 ![ssdw](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/4/a/4a626558f3d3fe441f5903eb57a0382c3b7aa9c3.jpeg)

 ![ssde](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/a/8a64db88ed5f62fb175639e480c62d95ce2e2234.jpeg)