# STL object and intersecting plane

**URL:** <https://discourse.shapr3d.com/t/stl-object-and-intersecting-plane/22616>\
**Category:** Modeling Questions\
**Created:** [November 23, 2022, 9:06am UTC](https://discourse.shapr3d.com/t/stl-object-and-intersecting-plane/22616 "2022-11-23T09:06:21Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![Matt\_the-Rathje](https://avatars.discourse-cdn.com/v4/letter/m/49beb7/32.png) [@Matt\_the-Rathje](https://discourse.shapr3d.com/u/Matt_the-Rathje)\
**Post date:** [November 23, 2022, 8:14pm UTC](https://discourse.shapr3d.com/t/stl-object-and-intersecting-plane/22616/20 "2022-11-23T20:14:09Z")

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> [@Peter\_b](#):
>
> Shapr is able to split the body and diplay the split but not color the split surface?

Like @Laci_K already said: There is no split-surface due to the fact that there is no “Inside” of the mesh, because it is not closed. No “Inside” means that there is no material that can be computed. In fact the mesh is no body (with a volume) - it is just a shell with zero thickness. If you are still working on the occulus-controller you may try using the file I provided where I gave the surfaces a thickness of 0,01mm - there will be an tiny split-surface visible.

> [@Re-edit an existing STL file from Thingsverse](https://discourse.shapr3d.com/t/re-edit-an-existing-stl-file-from-thingsverse/7229/13):
>
> Hey Peter, indeed the geometry consists of surface-bodies that are not closed - No Solid, no fun! wink Working with 3D-scanned data is a hard task and I checked the data and if i could close the gaps easily for you, so you’ll have a solid Body, but that would require at least some hours of surface-modelling, because of the geometry being already faulty: [2022-11-20 11\_05\_30-SOLIDWORKS 2019 SP5.0 - Oculus Quest 2 RH manual surface no buttons Refined \_] Here you see the zebra on the surface …

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