# Grid to disc union question

**URL:** <https://discourse.shapr3d.com/t/grid-to-disc-union-question/17570>\
**Category:** Modeling Questions\
**Created:** [February 21, 2022, 8:58pm UTC](https://discourse.shapr3d.com/t/grid-to-disc-union-question/17570 "2022-02-21T20:58:35Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Technofaux](https://avatars.discourse-cdn.com/v4/letter/t/eb9ed0/32.png) [@Technofaux](https://discourse.shapr3d.com/u/Technofaux)\
**Post date:** [February 21, 2022, 8:58pm UTC](https://discourse.shapr3d.com/t/grid-to-disc-union-question/17570/1 "2022-02-21T20:58:36Z")

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Hello everyone,

I am trying to end up with a disc with the grid pattern on top of the disc. I am not sure if I am going about this the right way. I created the disc, then created an individual grid square then copied the pattern on top of the disc, now I want to create a union of the two but I can’t seem to do that. I may not be selecting the objects correctly, but not sure. Please see the images for reference.

If there is a better way to go about doing this, please let me know.

Thanks!!

 ![grid1](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/bc2c6522ae71201f46608388facd981b7bb703c2.png)  
 ![grid2](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/f/ff3867ab70279afd26c4e273325f6e0353c0dc20.png)

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**Author:** ![SM1](https://avatars.discourse-cdn.com/v4/letter/s/9de0a6/32.png) [@SM1](https://discourse.shapr3d.com/u/SM1)\
**Post date:** [February 21, 2022, 9:15pm UTC](https://discourse.shapr3d.com/t/grid-to-disc-union-question/17570/2 "2022-02-21T21:15:26Z")

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If you just want to end up with a disc with that pattern, just extrude the circle through the pattern and get the intersection:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/9/93b4736c57d4a7b80168645bd36b73a24e37f63e.jpeg)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/2/2ae5dee17e4599d44d52b7555ac43c621018fbf0.jpeg)

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<div class="post-metadata">

**Author:** ![Technofaux](https://avatars.discourse-cdn.com/v4/letter/t/eb9ed0/32.png) [@Technofaux](https://discourse.shapr3d.com/u/Technofaux)\
**Post date:** [February 21, 2022, 10:18pm UTC](https://discourse.shapr3d.com/t/grid-to-disc-union-question/17570/3 "2022-02-21T22:18:28Z")

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Ahh thank you! Still a lot to learn. That makes it much easier!

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<div class="post-metadata">

**Author:** ![Technofaux](https://avatars.discourse-cdn.com/v4/letter/t/eb9ed0/32.png) [@Technofaux](https://discourse.shapr3d.com/u/Technofaux)\
**Post date:** [February 22, 2022, 12:42am UTC](https://discourse.shapr3d.com/t/grid-to-disc-union-question/17570/4 "2022-02-22T00:42:25Z")

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Hi SM1,

I have tried a few different ways to affect the intersection but am not having much luck. I extruded the circle through the grid pattern but I can’t seem to create the intersection, I am only able to select the outer pattern area but can’t select the circle as part of the intersection process. Could you walk me through the steps? Thanks again, Bob

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/c/cc4e5e1b06531b683f4c87c5563df2803dd25f8a.jpeg)

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<div class="post-metadata">

**Author:** ![SM1](https://avatars.discourse-cdn.com/v4/letter/s/9de0a6/32.png) [@SM1](https://discourse.shapr3d.com/u/SM1)\
**Post date:** [February 22, 2022, 1:47am UTC](https://discourse.shapr3d.com/t/grid-to-disc-union-question/17570/5 "2022-02-22T01:47:51Z")

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Looks like you’re trying to use the intersect tool. You can do it that way, but I find it easier to just extrude the circle through the grid and select the type of extrusion:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/4/457b23a61ed61d8ee9a0843290e642d195913636.jpeg)

Select intersect:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/5/5d040f064ef5d8f0c0bdd89ca87c27fba61e2db3.jpeg)