# SimpleFilters (BinaryThinningImageFilter) not working in latest MacOS build?

**URL:** <https://discourse.slicer.org/t/simplefilters-binarythinningimagefilter-not-working-in-latest-macos-build/10403>\
**Category:** Support\
**Created:** [February 23, 2020, 3:11pm UTC](https://discourse.slicer.org/t/simplefilters-binarythinningimagefilter-not-working-in-latest-macos-build/10403 "2020-02-23T15:11:44Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![hherhold](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/hherhold/32/12199_2.png) [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Post date:** [February 23, 2020, 3:39pm UTC](https://discourse.slicer.org/t/simplefilters-binarythinningimagefilter-not-working-in-latest-macos-build/10403/3 "2020-02-23T15:39:17Z")

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OK, other filters work fine. I know I’ve run this before, specifically for this workflow (below), but I feel like I’m doing something wrong… I will let it run but I’m pretty sure it did not take this long the last time I did this.

Thanks!

> [@How to analyze the thickness of the model](https://discourse.slicer.org/t/how-to-analyze-the-thickness-of-the-model/2735):
>
> Can I analyze the thickness of a stl model, and then get a color map. The distance between the two sides of an object. [2018-04-30\_215013]

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