# Adding uniform holes to hollow cylindrical or irregular shapes

**URL:** <https://discourse.shapr3d.com/t/adding-uniform-holes-to-hollow-cylindrical-or-irregular-shapes/24890>\
**Category:** Modeling Questions\
**Created:** [March 21, 2023, 7:57am UTC](https://discourse.shapr3d.com/t/adding-uniform-holes-to-hollow-cylindrical-or-irregular-shapes/24890 "2023-03-21T07:57:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Chandlermclellan](https://avatars.discourse-cdn.com/v4/letter/c/a183cd/32.png) [@Chandlermclellan](https://discourse.shapr3d.com/u/Chandlermclellan)\
**Post date:** [March 21, 2023, 7:57am UTC](https://discourse.shapr3d.com/t/adding-uniform-holes-to-hollow-cylindrical-or-irregular-shapes/24890/1 "2023-03-21T07:57:27Z")

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I am trying to create a cylindrical lamp shade and an irregularly shaped lampshade. I want there to be holes covering the entire surface of each shape. I want the holes to be evenly and consistently spaced. I come from a woodworking background. I am imagining a flat piece of plywood with uniform holes drilled through the entire sheet and then bending and molding the plywood into a specific shape. How can I achieve this using Shapr.

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**Author:** ![Stephen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/stephen/32/16350_2.png) [@Stephen](https://discourse.shapr3d.com/u/Stephen)\
**Post date:** [March 21, 2023, 5:49pm UTC](https://discourse.shapr3d.com/t/adding-uniform-holes-to-hollow-cylindrical-or-irregular-shapes/24890/2 "2023-03-21T17:49:21Z")

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Welcome to the forum.  
That could be done in more than one way. You could use Projections with your sketches, or Patterns or Subtractions.  
I used the Pattern tool (circular and linear) here to give an example. I didn’t bother too much with accurate measurements as the forum only allows 29mb uploads and this clip is already near to that limit.

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**Author:** ![Chandlermclellan](https://avatars.discourse-cdn.com/v4/letter/c/a183cd/32.png) [@Chandlermclellan](https://discourse.shapr3d.com/u/Chandlermclellan)\
**Post date:** [March 22, 2023, 5:55am UTC](https://discourse.shapr3d.com/t/adding-uniform-holes-to-hollow-cylindrical-or-irregular-shapes/24890/3 "2023-03-22T05:55:45Z")

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Stephen, this is excellent, thank you. Exactly what I was looking for.