# Subtract method - Boolean operation failed

**URL:** <https://discourse.shapr3d.com/t/subtract-method-boolean-operation-failed/26516>\
**Category:** Modeling Questions\
**Created:** [June 29, 2023, 3:53pm UTC](https://discourse.shapr3d.com/t/subtract-method-boolean-operation-failed/26516 "2023-06-29T15:53:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![3ASYPRINT](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/3asyprint/32/21200_2.png) [@3ASYPRINT](https://discourse.shapr3d.com/u/3ASYPRINT)\
**Post date:** [June 29, 2023, 3:53pm UTC](https://discourse.shapr3d.com/t/subtract-method-boolean-operation-failed/26516/1 "2023-06-29T15:53:06Z")

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Greetings to the community, thank you for it!

I’m trying to modify the model and put holes in it. The beginning was good but now I can’t do it even after smaller quantities, not even one piece can be subtracted using the subtract method.  
Boolean operation failed…  
Thanks a lot for your help.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/f/5/f5ecebe342ec46ee53ea4e28e36225fa51f72b87.jpeg)

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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:** [June 30, 2023, 12:35pm UTC](https://discourse.shapr3d.com/t/subtract-method-boolean-operation-failed/26516/2 "2023-06-30T12:35:17Z")

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Hi @3ASYPRINT, Boolean tools fail regularly because of the following two cases, please check if they are valid for your model:

- There is no intersection between the bodies
- There are overlapping faces instead of intersecting bodies

If you are not sure what can be the problem, please feel free to send us the file by opening a ticket using this link:  
[https://support.shapr3d.com/hc/en-us/requests/new](https://support.shapr3d.com/hc/en-us/requests/new)