# Single face with Replace a face tool?

**URL:** https://discourse.shapr3d.com/t/single-face-with-replace-a-face-tool/12653
**Category:** Modeling Questions
**Created:** [May 6, 2021, 8:43am UTC](https://discourse.shapr3d.com/t/single-face-with-replace-a-face-tool/12653 "2021-05-06T08:43:28Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@Vincent](https://discourse.shapr3d.com/u/Vincent)
#### Post date: [May 6, 2021, 8:43am UTC](https://discourse.shapr3d.com/t/single-face-with-replace-a-face-tool/12653/1 "2021-05-06T08:43:28Z")

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Hello,

First of all, Shapr3D is a very amazing. Thanks for that.  
I recently found something strange that happens sometimes when I want to replace a face to another face.  
Here are the screenshots:  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/d/dbe9861e339db570a530bbe100def4adb6df6b8c.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/0/0d8974e34566c835cbf3c2c4c03dc599afaf913a.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/1/195223089aa4acdbe33b9db91ca6ec88b0e63fa0.jpeg)

As you can see, the alignement is wrong and I must use another way to align the two faces shown on the screenshots (creation of a plan from the reference face, creation of a rectangular drawing and then, cutting the other object with the rectangular).

Thanks for your help.  
Vincent

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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: [May 6, 2021, 12:02pm UTC](https://discourse.shapr3d.com/t/single-face-with-replace-a-face-tool/12653/2 "2021-05-06T12:02:39Z")

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Hi @Vincent, Can you please upload the workspace or send us at [support@shapr3d.com](mailto:support@shapr3d.com)? If you could also share a picture with us where the aligned surfaces are highlighted with different colors, that would be really helpful!

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### Author: ![Vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@Vincent](https://discourse.shapr3d.com/u/Vincent)
#### Post date: [May 6, 2021, 1:45pm UTC](https://discourse.shapr3d.com/t/single-face-with-replace-a-face-tool/12653/3 "2021-05-06T13:45:14Z")

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Hi Peter

Thanks for your answer.

I corrected my initial post because the issue is with replace face tool and not the align tool.  
I sent by email my workspace with the issue.  
Do you still need me to send you a picture with highlighted surfaces because I don’t see that when i make the operation.

Thanks  
Vincent

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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: [May 6, 2021, 1:47pm UTC](https://discourse.shapr3d.com/t/single-face-with-replace-a-face-tool/12653/4 "2021-05-06T13:47:08Z")

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Hi Vincent, thanks, I’ve received the file. Let me please answer you via email as discussing the issue publicly without any more details will look like a bad teaser 😃 At the end, you can share the result if you feel so

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### Author: ![Vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@Vincent](https://discourse.shapr3d.com/u/Vincent)
#### Post date: [May 6, 2021, 4:28pm UTC](https://discourse.shapr3d.com/t/single-face-with-replace-a-face-tool/12653/5 "2021-05-06T16:28:59Z")

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As we discussed by email, the solution is to deactivate the option « over side » when using replace tool, because in my case, there were overlapping bodies. Thanks Peter!