# Mic tutorial - unable to subtract / cut grooves

**URL:** <https://discourse.shapr3d.com/t/mic-tutorial-unable-to-subtract-cut-grooves/10167>\
**Category:** Modeling Questions\
**Created:** [December 8, 2020, 3:28am UTC](https://discourse.shapr3d.com/t/mic-tutorial-unable-to-subtract-cut-grooves/10167 "2020-12-08T03:28:17Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Kenneth](https://avatars.discourse-cdn.com/v4/letter/k/94ad74/32.png) [@Kenneth](https://discourse.shapr3d.com/u/Kenneth)\
**Post date:** [December 8, 2020, 3:28am UTC](https://discourse.shapr3d.com/t/mic-tutorial-unable-to-subtract-cut-grooves/10167/1 "2020-12-08T03:28:17Z")

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Hi, I manage to create the two-halves and shelled them. Just when I try to cut all the grooves, I can’t. No “done” button after selecting the bodies. They clearly intersect each other.

Have I done sth stupid here?

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**Author:** ![Kenneth](https://avatars.discourse-cdn.com/v4/letter/k/94ad74/32.png) [@Kenneth](https://discourse.shapr3d.com/u/Kenneth)\
**Post date:** [December 8, 2020, 3:29am UTC](https://discourse.shapr3d.com/t/mic-tutorial-unable-to-subtract-cut-grooves/10167/2 "2020-12-08T03:29:09Z")

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![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/0/0ff278f836b146362e41ef20932196401ef50fa9.jpeg)

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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:** [December 8, 2020, 3:35am UTC](https://discourse.shapr3d.com/t/mic-tutorial-unable-to-subtract-cut-grooves/10167/3 "2020-12-08T03:35:16Z")

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At first glance it looks like the body you want to subtract from is superimposed on another body. Hide Body 01(2) and see if there is another body there.

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**Author:** ![Kenneth](https://avatars.discourse-cdn.com/v4/letter/k/94ad74/32.png) [@Kenneth](https://discourse.shapr3d.com/u/Kenneth)\
**Post date:** [December 8, 2020, 8:33am UTC](https://discourse.shapr3d.com/t/mic-tutorial-unable-to-subtract-cut-grooves/10167/5 "2020-12-08T08:33:03Z")

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> [@Kenneth](#):
>
> Thanks Mike! Yes I have a duplicare body overlaying each other. After getting rid of it, cam finally subtract.
> 
> However, I still get a weird result after subtracting. You know what rage problem is?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/1/155abad55f67590a05657e66f10a64a4f0efbc5b.jpeg)

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**Author:** ![Kenneth](https://avatars.discourse-cdn.com/v4/letter/k/94ad74/32.png) [@Kenneth](https://discourse.shapr3d.com/u/Kenneth)\
**Post date:** [December 8, 2020, 8:46am UTC](https://discourse.shapr3d.com/t/mic-tutorial-unable-to-subtract-cut-grooves/10167/6 "2020-12-08T08:46:32Z")

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Got it!! I think one of the shell had some issue. I dubbed the good one over and it is done!

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/7/74550d26f55518035b87e84f51f24717beb7b5f2.jpeg)