# Hole in curved shape don’t more works

**URL:** <https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098>\
**Category:** Modeling Questions\
**Created:** [August 25, 2022, 4:05pm UTC](https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098 "2022-08-25T16:05:15Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Bluebird](https://avatars.discourse-cdn.com/v4/letter/b/dec6dc/32.png) [@Bluebird](https://discourse.shapr3d.com/u/Bluebird)\
**Post date:** [August 25, 2022, 4:05pm UTC](https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098/1 "2022-08-25T16:05:15Z")

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Hello everyone.

I’m trying to make a hole in a cylinder. First I added a paralell plane into a point surface. After I pushed a circle into cylinder( I had make this another time) but only at a especific distance a hole is make, if I comtinues to pushe a circle, Sharpd3D creates another cylinder.

What happens.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/9/7/9757ca6f6d23f293433719bbaaf0dd2843d70e68.jpeg)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/1/a/1a181060fb08c678778b62ef4889ea2a8571e10f.jpeg)

Thank you very much.

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**Author:** ![Yepher](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/yepher/32/8902_2.png) [@Yepher](https://discourse.shapr3d.com/u/Yepher)\
**Post date:** [August 25, 2022, 10:17pm UTC](https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098/2 "2022-08-25T22:17:49Z")

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Are you extruding a projection or is the circle on the plane? I think the cylinder is also shelled (right?).

Try and move your plane (circle that you will extrude) away from the calendar and see if that gets you what you want.

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**Author:** ![Bluebird](https://avatars.discourse-cdn.com/v4/letter/b/dec6dc/32.png) [@Bluebird](https://discourse.shapr3d.com/u/Bluebird)\
**Post date:** [August 25, 2022, 10:45pm UTC](https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098/3 "2022-08-25T22:45:45Z")

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Thank you for your reply.

Ok, it works but is more difficult to have control of the hole. For example, if I need to make a hole with 10 mm of deep, I will need to discount the distance between the plane and the surface of cylinder.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/b/e/be380210958724f7b5f669c8172e89f14e8c01c1.jpeg)

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**Author:** ![Laci\_K](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/laci_k/32/8196_2.png) [@Laci\_K](https://discourse.shapr3d.com/u/Laci_K)\
**Post date:** [August 26, 2022, 7:27am UTC](https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098/4 "2022-08-26T07:27:15Z")

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Hi,

If you click on the badge next to the extrusion value, you can select what you want to happen.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/4/1/41c932be60c3e1b9c477e6f382b3ada072b0e288.jpeg)  
In your case, select subtract, so it won’t create a new body.

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<div class="post-metadata">

**Author:** ![Bluebird](https://avatars.discourse-cdn.com/v4/letter/b/dec6dc/32.png) [@Bluebird](https://discourse.shapr3d.com/u/Bluebird)\
**Post date:** [August 26, 2022, 3:18pm UTC](https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098/5 "2022-08-26T15:18:48Z")

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Thank you.

I’m on iPad…

A took the same approach in another new bodie and all works ok, as you can see bellow:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/e/0/e0a74cf7a04c8096f2365820e2b255b78c0a0f58.jpeg)

I don’t understand what happens with first object….

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<div class="post-metadata">

**Author:** ![Bluebird](https://avatars.discourse-cdn.com/v4/letter/b/dec6dc/32.png) [@Bluebird](https://discourse.shapr3d.com/u/Bluebird)\
**Post date:** [August 28, 2022, 12:38am UTC](https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098/6 "2022-08-28T00:38:12Z")

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There is a problem with this object. I tried a boolean operation…

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/2/6/260d7fb7055c2111b98e948016539bc38162d1f9.jpeg)

I don’t understand what happens….

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<div class="post-metadata">

**Author:** ![Bluebird](https://avatars.discourse-cdn.com/v4/letter/b/dec6dc/32.png) [@Bluebird](https://discourse.shapr3d.com/u/Bluebird)\
**Post date:** [August 28, 2022, 1:25am UTC](https://discourse.shapr3d.com/t/hole-in-curved-shape-don-t-more-works/21098/7 "2022-08-28T01:25:36Z")

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I discovered the problem.

All procedure was right, but there was a tangence between the two cylinder in x axis and a cylinder into y axis. I extruded the two cylinder in axis by amount of the radius of the cylinder in y axis and works.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/1/6/16b7eea1a09aca3e8b17bb3a63c755b65d120c79.jpeg)