# Convert STL mesh file to a solid with a really smooth surface

**URL:** <https://discourse.slicer.org/t/convert-stl-mesh-file-to-a-solid-with-a-really-smooth-surface/40024>\
**Category:** Support\
**Created:** [November 4, 2024, 10:48pm UTC](https://discourse.slicer.org/t/convert-stl-mesh-file-to-a-solid-with-a-really-smooth-surface/40024 "2024-11-04T22:48:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Sasank6677](https://avatars.discourse-cdn.com/v4/letter/s/e9c0ed/32.png) [@Sasank6677](https://discourse.slicer.org/u/Sasank6677)\
**Post date:** [November 4, 2024, 10:48pm UTC](https://discourse.slicer.org/t/convert-stl-mesh-file-to-a-solid-with-a-really-smooth-surface/40024/1 "2024-11-04T22:48:32Z")

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I need to convert an stl file (scan of a hand) from mesh (over 10000 triangles) to a solid body with very smooth surface that’s not triangulated. Please help.

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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:** [November 5, 2024, 2:59pm UTC](https://discourse.slicer.org/t/convert-stl-mesh-file-to-a-solid-with-a-really-smooth-surface/40024/2 "2024-11-05T14:59:31Z")

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Try the Surface Toolbox module, particularly the mesh optimization tool.

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**Author:** ![Sasank6677](https://avatars.discourse-cdn.com/v4/letter/s/e9c0ed/32.png) [@Sasank6677](https://discourse.slicer.org/u/Sasank6677)\
**Post date:** [November 5, 2024, 3:17pm UTC](https://discourse.slicer.org/t/convert-stl-mesh-file-to-a-solid-with-a-really-smooth-surface/40024/3 "2024-11-05T15:17:07Z")

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Will try, Thank you.