# Boolean failed upon Union

**URL:** <https://discourse.shapr3d.com/t/boolean-failed-upon-union/5185>\
**Category:** Modeling Questions\
**Created:** [July 20, 2019, 12:24am UTC](https://discourse.shapr3d.com/t/boolean-failed-upon-union/5185 "2019-07-20T00:24:08Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![gtrst](https://avatars.discourse-cdn.com/v4/letter/g/a8b319/32.png) [@gtrst](https://discourse.shapr3d.com/u/gtrst)\
**Post date:** [July 20, 2019, 12:24am UTC](https://discourse.shapr3d.com/t/boolean-failed-upon-union/5185/1 "2019-07-20T00:24:08Z")

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[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/9/921cdbb635d24ca7477494c1a10a3719c47c0f5f.MOV](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/9/921cdbb635d24ca7477494c1a10a3719c47c0f5f.MOV)

I’m trying to combine all the pizza slices that make up this guitar part into a single body via Union. It keeps on giving ‘The boolean failed’ message.

What might be the problem and, what would be a work-around for this?

Thanks.

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**Author:** ![gtrst](https://avatars.discourse-cdn.com/v4/letter/g/a8b319/32.png) [@gtrst](https://discourse.shapr3d.com/u/gtrst)\
**Post date:** [July 22, 2019, 7:39pm UTC](https://discourse.shapr3d.com/t/boolean-failed-upon-union/5185/2 "2019-07-22T19:39:37Z")

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Anyone? Shall I send the project file to support email when the design is complete?

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [July 22, 2019, 8:44pm UTC](https://discourse.shapr3d.com/t/boolean-failed-upon-union/5185/3 "2019-07-22T20:44:55Z")

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Hi,

Yes, please send the workspace to [support here](https://support.shapr3d.com/hc/en-us/requests/new) in .shapr format, we will look into it.

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**Author:** ![gtrst](https://avatars.discourse-cdn.com/v4/letter/g/a8b319/32.png) [@gtrst](https://discourse.shapr3d.com/u/gtrst)\
**Post date:** [July 22, 2019, 10:45pm UTC](https://discourse.shapr3d.com/t/boolean-failed-upon-union/5185/4 "2019-07-22T22:45:49Z")

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Thank you! I’m redrawing the curve with a lot more lines, I’ll send the project over once I finish it in order not to clog up the tech support. 🙂

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**Author:** ![gtrst](https://avatars.discourse-cdn.com/v4/letter/g/a8b319/32.png) [@gtrst](https://discourse.shapr3d.com/u/gtrst)\
**Post date:** [July 26, 2019, 9:02pm UTC](https://discourse.shapr3d.com/t/boolean-failed-upon-union/5185/5 "2019-07-26T21:02:03Z")

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So, while sending the workspace to [support](https://support.shapr3d.com/hc/en-us/requests/new) is helpful in fixing stuck projects, I wanted to have a workaround that may help when I get stuck with Union in the future.

This worked out for me, for now.

Extrude back bodies’ mating surface a millimeter or so, and loft two walls together. And union the gasket pieces to the bodies and it’ll union. This worked on me on the two problematic pieces I had.

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/a/ad515efac754b0289941714866dd8416648a2af1.mov](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/a/ad515efac754b0289941714866dd8416648a2af1.mov)

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**Author:** ![MiniMotoGuy](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/minimotoguy/32/13560_2.png) [@MiniMotoGuy](https://discourse.shapr3d.com/u/MiniMotoGuy)\
**Post date:** [January 10, 2023, 7:14am UTC](https://discourse.shapr3d.com/t/boolean-failed-upon-union/5185/6 "2023-01-10T07:14:30Z")

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I agree. Although the support tickets a great, it’s also nice to jump on the forum and see what worked so people can try in a pinch. Thanks for posting!