# Structured surface

**URL:** https://discourse.shapr3d.com/t/structured-surface/15404
**Category:** Modeling Questions
**Created:** [October 17, 2021, 6:10pm UTC](https://discourse.shapr3d.com/t/structured-surface/15404 "2021-10-17T18:10:48Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Dani85](https://avatars.discourse-cdn.com/v4/letter/d/958977/32.png) [@Dani85](https://discourse.shapr3d.com/u/Dani85)
#### Post date: [October 17, 2021, 6:10pm UTC](https://discourse.shapr3d.com/t/structured-surface/15404/1 "2021-10-17T18:10:48Z")

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Hello

I use Shapr 3D for iPad. I would like to create a cover with a structured surface. Like a perforated sheet.  
Is this possible without drawing and copying the circles individually?

Thanks for your help.

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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: [October 19, 2021, 5:51pm UTC](https://discourse.shapr3d.com/t/structured-surface/15404/3 "2021-10-19T17:51:11Z")

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Once you have all the circle sketches done per Pascal’s suggestion, you can also use the Equal Constraint on them. This way you can easily try your perforated sheet with different size holes provided you maintain the spacing between circles.

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/bb9781f49e22afd479ec16d14eb96f3be7a7b0f8.mov](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/bb9781f49e22afd479ec16d14eb96f3be7a7b0f8.mov)