# How do i fix this

**URL:** <https://discourse.shapr3d.com/t/how-do-i-fix-this/41450>\
**Category:** Modeling Questions\
**Created:** [August 11, 2026, 7:10pm UTC](https://discourse.shapr3d.com/t/how-do-i-fix-this/41450 "2026-08-11T19:10:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![103099](https://avatars.discourse-cdn.com/v4/letter/1/f9ae1b/32.png) [@103099](https://discourse.shapr3d.com/u/103099)\
**Post date:** [August 11, 2026, 7:10pm UTC](https://discourse.shapr3d.com/t/how-do-i-fix-this/41450/1 "2026-08-11T19:10:31Z")

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l try to Union my letter Y but the non manifold error is shown.Anyone who knows how to help please hellp me this is my work.

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[https://support.shapr3d.com/hc/en-us/requests/new](https://support.shapr3d.com/hc/en-us/requests/new)

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [August 11, 2026, 7:20pm UTC](https://discourse.shapr3d.com/t/how-do-i-fix-this/41450/2 "2026-08-11T19:20:13Z")

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The problem is in the center:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/6/a/6ad06192f32c76bac201e2e0ea7a811502530a3b.png)

These two parts connected with only one edge:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/f/f/ffdb84885dc82d398496aae86d709763b86d00fe.png)

This is exactly whats called non-manifold.

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**Author:** ![Fawksey3D](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/fawksey3d/32/36063_2.png) [@Fawksey3D](https://discourse.shapr3d.com/u/Fawksey3D)\
**Post date:** [August 11, 2026, 8:04pm UTC](https://discourse.shapr3d.com/t/how-do-i-fix-this/41450/3 "2026-08-11T20:04:04Z")

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Appeared as a single object for me so I guess solved.