# Trying to mirror a face

**URL:** <https://discourse.shapr3d.com/t/trying-to-mirror-a-face/26963>\
**Category:** Modeling Questions\
**Created:** [July 25, 2023, 4:47pm UTC](https://discourse.shapr3d.com/t/trying-to-mirror-a-face/26963 "2023-07-25T16:47:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jmstovall](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/jmstovall/32/21395_2.png) [@jmstovall](https://discourse.shapr3d.com/u/jmstovall)\
**Post date:** [July 25, 2023, 4:47pm UTC](https://discourse.shapr3d.com/t/trying-to-mirror-a-face/26963/1 "2023-07-25T16:47:02Z")

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I know there’s an easier way to do this…

I have this box that has an indentation on it. This is all correct and the depth I want:  
 ![Screenshot by Dropbox Capture](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/f/0/f03252d4210abed4178222d57c9c9b1d9dda2866.png)

Now, I would like to mirror that indentation on the other side, which is currently blank. But when I do select the face and run the mirror function, I get “operation failed because the resulting body would be invalid.”

 ![Screenshot by Dropbox Capture](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/1/b/1bf2b880ad4906d18cf2534edf4baca0311c028d.jpeg)

Any suggestions? Am I missing something simple?

Thanks in advance!

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [July 25, 2023, 4:53pm UTC](https://discourse.shapr3d.com/t/trying-to-mirror-a-face/26963/2 "2023-07-25T16:53:54Z")

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<div class="post-metadata">

**Author:** ![jmstovall](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/jmstovall/32/21395_2.png) [@jmstovall](https://discourse.shapr3d.com/u/jmstovall)\
**Post date:** [July 25, 2023, 6:18pm UTC](https://discourse.shapr3d.com/t/trying-to-mirror-a-face/26963/3 "2023-07-25T18:18:56Z")

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THANK YOU! I wouldn’t have gotten to that solution on my own. Once I placed a construction axis, it was drop dead simple.

Much appreciated!

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [July 25, 2023, 6:41pm UTC](https://discourse.shapr3d.com/t/trying-to-mirror-a-face/26963/4 "2023-07-25T18:41:31Z")

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You’re welcome. Note that I sketched a vertical line at the midpoint of the side which represents the mirror plane. And yes, a construction axis works too.