# Unable to revolve a ellipse around an axis

**URL:** <https://discourse.shapr3d.com/t/unable-to-revolve-a-ellipse-around-an-axis/14173>\
**Category:** Modeling Questions\
**Created:** [July 30, 2021, 4:05pm UTC](https://discourse.shapr3d.com/t/unable-to-revolve-a-ellipse-around-an-axis/14173 "2021-07-30T16:05:50Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![andyroo77](https://avatars.discourse-cdn.com/v4/letter/a/b782af/32.png) [@andyroo77](https://discourse.shapr3d.com/u/andyroo77)\
**Post date:** [July 30, 2021, 4:05pm UTC](https://discourse.shapr3d.com/t/unable-to-revolve-a-ellipse-around-an-axis/14173/1 "2021-07-30T16:05:50Z")

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I want to make a rugby ball shape by revolving an ellipse around a centered axis but it says invalid shape or something. Exact same thing works fine with a circle sketch to make a sphere. How do I fix this?

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [July 30, 2021, 4:08pm UTC](https://discourse.shapr3d.com/t/unable-to-revolve-a-ellipse-around-an-axis/14173/2 "2021-07-30T16:08:18Z")

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Can you share a screenshot?

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**Author:** ![andyroo77](https://avatars.discourse-cdn.com/v4/letter/a/b782af/32.png) [@andyroo77](https://discourse.shapr3d.com/u/andyroo77)\
**Post date:** [July 30, 2021, 4:15pm UTC](https://discourse.shapr3d.com/t/unable-to-revolve-a-ellipse-around-an-axis/14173/3 "2021-07-30T16:15:25Z")

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![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/a/a3371453d02902ef679b47d24508923df0150afb.jpeg)

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<div class="post-metadata">

**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [July 30, 2021, 4:17pm UTC](https://discourse.shapr3d.com/t/unable-to-revolve-a-ellipse-around-an-axis/14173/4 "2021-07-30T16:17:32Z")

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Split it into half with a line at the axis, and revolve the half.

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<div class="post-metadata">

**Author:** ![andyroo77](https://avatars.discourse-cdn.com/v4/letter/a/b782af/32.png) [@andyroo77](https://discourse.shapr3d.com/u/andyroo77)\
**Post date:** [July 30, 2021, 4:29pm UTC](https://discourse.shapr3d.com/t/unable-to-revolve-a-ellipse-around-an-axis/14173/5 "2021-07-30T16:29:31Z")

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Thanks, that works. Not sure why it works ok the first way with a circle