# Union doesn't seem to work with shapes

**URL:** <https://discourse.shapr3d.com/t/union-doesnt-seem-to-work-with-shapes/21261>\
**Category:** Modeling Questions\
**Created:** [September 5, 2022, 6:09pm UTC](https://discourse.shapr3d.com/t/union-doesnt-seem-to-work-with-shapes/21261 "2022-09-05T18:09:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Nypam](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/nypam/32/16834_2.png) [@Nypam](https://discourse.shapr3d.com/u/Nypam)\
**Post date:** [September 5, 2022, 6:09pm UTC](https://discourse.shapr3d.com/t/union-doesnt-seem-to-work-with-shapes/21261/1 "2022-09-05T18:09:31Z")

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Hey there,

I’m new to Shapr3D and so far, I really love it.

However, I cannot figure out why I can’t use ‘union’ to combine different objects.

Here is a quick demo of ‘union’ not working as expected.

[![](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/4/9/4993895f29e2d732dc7ff263080ae7a30b15aded.jpeg "Shapr3D Union not working") ](https://www.youtube.com/watch?v=2oydfo8Rc0s)

Could you please let me know what I’m doing wrong?

Thank you 🙂

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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:** [September 5, 2022, 6:12pm UTC](https://discourse.shapr3d.com/t/union-doesnt-seem-to-work-with-shapes/21261/2 "2022-09-05T18:12:23Z")

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Hi @Nypam, it’s hard to tell based on the video what’s the problem, but it looks like that the bodies don’t intersect.

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<div class="post-metadata">

**Author:** ![Nypam](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/nypam/32/16834_2.png) [@Nypam](https://discourse.shapr3d.com/u/Nypam)\
**Post date:** [September 5, 2022, 6:24pm UTC](https://discourse.shapr3d.com/t/union-doesnt-seem-to-work-with-shapes/21261/3 "2022-09-05T18:24:27Z")

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It was precisely that! I subdivided the body at some point but forgot to ensure the bodies intersected each other. Thank you for pointing me in the right direction.