# STL format

**URL:** <https://discourse.shapr3d.com/t/stl-format/15171>\
**Category:** Modeling Questions\
**Created:** [October 3, 2021, 9:13pm UTC](https://discourse.shapr3d.com/t/stl-format/15171 "2021-10-03T21:13:53Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![In3d](https://avatars.discourse-cdn.com/v4/letter/i/7ea924/32.png) [@In3d](https://discourse.shapr3d.com/u/In3d)\
**Post date:** [October 3, 2021, 9:13pm UTC](https://discourse.shapr3d.com/t/stl-format/15171/1 "2021-10-03T21:13:53Z")

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I have imported a STL file and I want to see how to bring up the black outlines as attached photo

Any idea ?..

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/6/61121b0eb10b94f892f26166764588381cbd5cc0.jpeg)

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**Author:** ![TheBum](https://avatars.discourse-cdn.com/v4/letter/t/eada6e/32.png) [@TheBum](https://discourse.shapr3d.com/u/TheBum)\
**Post date:** [October 4, 2021, 3:48pm UTC](https://discourse.shapr3d.com/t/stl-format/15171/2 "2021-10-04T15:48:45Z")

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Short answer: you can’t. S3D doesn’t support editing of STLs. You’d have to import the STL into an application that can do a BRep conversion and then export for importation into S3D, assuming the STL is not too complex for the app to convert. Even then, the conversion often ends up with strange artifacts.

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**Author:** ![In3d](https://avatars.discourse-cdn.com/v4/letter/i/7ea924/32.png) [@In3d](https://discourse.shapr3d.com/u/In3d)\
**Post date:** [October 4, 2021, 3:52pm UTC](https://discourse.shapr3d.com/t/stl-format/15171/3 "2021-10-04T15:52:22Z")

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Thanks. Let me try 👍🏼

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**Author:** ![TheBum](https://avatars.discourse-cdn.com/v4/letter/t/eada6e/32.png) [@TheBum](https://discourse.shapr3d.com/u/TheBum)\
**Post date:** [October 4, 2021, 3:53pm UTC](https://discourse.shapr3d.com/t/stl-format/15171/4 "2021-10-04T15:53:12Z")

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I’ve had some success with using Fusion 360 to convert STLs to BReps.