# What is it

**URL:** <https://discourse.shapr3d.com/t/what-is-it/23421>\
**Category:** Modeling Questions\
**Created:** [January 5, 2023, 9:44am UTC](https://discourse.shapr3d.com/t/what-is-it/23421 "2023-01-05T09:44:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Anna](https://avatars.discourse-cdn.com/v4/letter/a/779978/32.png) [@Anna](https://discourse.shapr3d.com/u/Anna)\
**Post date:** [January 5, 2023, 9:44am UTC](https://discourse.shapr3d.com/t/what-is-it/23421/1 "2023-01-05T09:44:11Z")

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What does Operation failed because the resulting body wouldn’t be vaild.

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**Author:** ![KPeter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/kpeter/32/7644_2.png) [@KPeter](https://discourse.shapr3d.com/u/KPeter)\
**Post date:** [January 5, 2023, 9:58am UTC](https://discourse.shapr3d.com/t/what-is-it/23421/2 "2023-01-05T09:58:17Z")

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Hey @Anna,  
There can be many reasons why the boolean operations fail, the _not valid_ detail here hints at a zero-thickness issue somewhere.

Please feel free to share some more info like screenshots or a Shapr3D design, we’re happy to help.