# Hole centers

**URL:** <https://discourse.shapr3d.com/t/hole-centers/35311>\
**Category:** Modeling Questions\
**Created:** [November 24, 2024, 10:40pm UTC](https://discourse.shapr3d.com/t/hole-centers/35311 "2024-11-24T22:40:41Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![Chopperdaves](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@Chopperdaves](https://discourse.shapr3d.com/u/Chopperdaves)\
**Post date:** [November 24, 2024, 10:40pm UTC](https://discourse.shapr3d.com/t/hole-centers/35311/1 "2024-11-24T22:40:41Z")

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So I am modifying a step file with holes in a flat surface I need to make other features using the hole centers and i cant see how to get it to show me the center of a hole in sketch mode. I even need to make a line from hole center to hole center and  
Im not sure how to do it

Even tho in the past ive been able to but im not sure what im doing different now… any help would be fantastic

Thank you

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**Author:** ![Chopperdaves](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@Chopperdaves](https://discourse.shapr3d.com/u/Chopperdaves)\
**Post date:** [November 24, 2024, 10:46pm UTC](https://discourse.shapr3d.com/t/hole-centers/35311/2 "2024-11-24T22:46:57Z")

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So basically how do i get it to show me hole centers in sketch mode. Ive made it do it in the past but i dont know how…

Again, thank you

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**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [November 25, 2024, 2:50am UTC](https://discourse.shapr3d.com/t/hole-centers/35311/3 "2024-11-25T02:50:22Z")

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![Screenshot 2024-11-24 at 6.47.05 PM](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/c/0/c0945bdf6f3f83eabb3ff9db8a41932ce4b91873.png)

Does your circle look like on the right?

Circle on the right is made with curves.

One on the left done by math.

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**Author:** ![Chopperdaves](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@Chopperdaves](https://discourse.shapr3d.com/u/Chopperdaves)\
**Post date:** [November 25, 2024, 3:15am UTC](https://discourse.shapr3d.com/t/hole-centers/35311/4 "2024-11-25T03:15:07Z")

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Looks like both Its just a circle with no lines out side it and no points anywhere

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**Author:** ![Chopperdaves](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@Chopperdaves](https://discourse.shapr3d.com/u/Chopperdaves)\
**Post date:** [November 25, 2024, 3:20am UTC](https://discourse.shapr3d.com/t/hole-centers/35311/5 "2024-11-25T03:20:49Z")

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![IMG_8397](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/2/a/2a7fb6b9f6bd8bbe46c4a2ce15abf7e21d638b7d.jpeg)  
 ![IMG_8395](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/f/9/f93df6ca0fc56ae55d1cea0c63fc7561f80070e5.jpeg)  
The second one is in sketch mode

Damn my monitor is dirty

Just ignore that dirt at 10:30

And yes i want to know how to get it to show the center point like your pic on the left

And yes i made them by math

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<div class="post-metadata">

**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [November 25, 2024, 3:46am UTC](https://discourse.shapr3d.com/t/hole-centers/35311/6 "2024-11-25T03:46:24Z")

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If you made them by math then it’s not a curve so maybe your sketch is now hidden?

As soon as you extrude your sketch Shapr hides that sketch and you want to unhide it on the items panel on the Left.

 ![Screenshot 2024-11-24 at 7.45.30 PM](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/5/b/5b542b713c42bfa4d289a078e44365305831a203.jpeg)

If you unhide your sketch it should look like this with the center point and have a dark highlight.

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<div class="post-metadata">

**Author:** ![Chopperdaves](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@Chopperdaves](https://discourse.shapr3d.com/u/Chopperdaves)\
**Post date:** [November 25, 2024, 5:45am UTC](https://discourse.shapr3d.com/t/hole-centers/35311/7 "2024-11-25T05:45:06Z")

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Well damn! That makes a ton of sense! I will look first thing in the am!

Thank you!

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**Author:** ![JST](https://avatars.discourse-cdn.com/v4/letter/j/edb3f5/32.png) [@JST](https://discourse.shapr3d.com/u/JST)\
**Post date:** [November 25, 2024, 6:01am UTC](https://discourse.shapr3d.com/t/hole-centers/35311/8 "2024-11-25T06:01:12Z")

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Project the edeges , if it from curves (this happens with downloaded files ), make a tangent lines with coincident constraint, and draw a line perpendicular at this point . The mid point of this line will be the centre.(inside the the sketch)  
You can check it, with three times of this process, if all lines crossed in one point the sketch is circle…