# Bone segmentation to create 3D-printable STL

**URL:** <https://discourse.slicer.org/t/bone-segmentation-to-create-3d-printable-stl/960>\
**Category:** Support\
**Created:** [August 28, 2017, 1:43pm UTC](https://discourse.slicer.org/t/bone-segmentation-to-create-3d-printable-stl/960 "2017-08-28T13:43:59Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [October 2, 2017, 3:01pm UTC](https://discourse.slicer.org/t/bone-segmentation-to-create-3d-printable-stl/960/21 "2017-10-02T15:01:04Z")

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Try to be more conservative with your thresholds, make sure the areas that you include in a segment are definitely correct. Then use `Grow from seeds` effect to create complete segmentation from those “seed” regions.

You can also use `Watershed` effect (available in SegmentEditorExtraEffects extension), which takes the same input as `Grow from seeds` but produces a smoother output. Smoothness is controlled by Object scale, try with 1mm and adjust as needed. The main disadvantage of `Watershed` is that it is slower compared to `Grow from seeds`.

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [October 3, 2017, 12:03am UTC](https://discourse.slicer.org/t/bone-segmentation-to-create-3d-printable-stl/960/22 "2017-10-03T00:03:59Z")

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You might also find [BoneTextureExtension](https://www.slicer.org/wiki/Documentation/Nightly/Extensions/BoneTextureExtension) useful for analyzing bone structure.

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [May 1, 2018, 4:28am UTC](https://discourse.slicer.org/t/bone-segmentation-to-create-3d-printable-stl/960/23 "2018-05-01T04:28:35Z")

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Split this topic on May 1, 2018, 4:28am UTC

2 posts were split to a new topic: [Getting coordinates of MRI visible markers](https://discourse.slicer.org/t/getting-coordinates-of-mri-visible-markers/2742)

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