# Union gyroid

**URL:** <https://discourse.shapr3d.com/t/union-gyroid/32938>\
**Category:** Modeling Questions\
**Created:** [July 18, 2024, 2:59pm UTC](https://discourse.shapr3d.com/t/union-gyroid/32938 "2024-07-18T14:59:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lanun](https://avatars.discourse-cdn.com/v4/letter/l/a183cd/32.png) [@lanun](https://discourse.shapr3d.com/u/lanun)\
**Post date:** [July 18, 2024, 2:59pm UTC](https://discourse.shapr3d.com/t/union-gyroid/32938/1 "2024-07-18T14:59:43Z")

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I am trying to union multiple gyroid (source from thingiverse) but it show boolean failed.  
Anyone know why?

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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:** [July 19, 2024, 10:31pm UTC](https://discourse.shapr3d.com/t/union-gyroid/32938/2 "2024-07-19T22:31:56Z")

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Could be a non-manifold mesh. Load the mesh into Fusion, repair it, and export it.