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I'm trying to smooth cone's side like I did for a cylinder using Edge Split and Subdivision Surface.

However, the cone (red one) is changing its shape at the top: enter image description here enter image description here

How can I prevent this?

Skyblade
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2 Answers2

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The easiest way is to actually use a cylinder. you can then shrink the top to a very small size in order to make it feel like a cone. Then add an edge split modifier and the SubSurf. The reason a cylinder is better is that the edge split doesn't work really well for triangles, and the cone basemesh is made of triangles. (You can't add edge loops on a cone).

Cylinder-cone trick

On the screenshot I made the cylinder top big so you can see it's actually a cylinder but feel free to shrink the size as you want.

Pascal Nardi
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    related: https://blender.stackexchange.com/questions/39289/why-cant-i-loop-cut-a-cone and https://blender.stackexchange.com/questions/35581/how-would-you-make-an-edge-circle-around-a-cone/35582#35582 and https://blender.stackexchange.com/questions/23363/how-can-i-cut-off-tip-of-a-cone –  Apr 15 '17 at 02:29
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    I would like to note that I used Simple Deform -> Taper modifier to change the shape of a cylinder. – Skyblade Apr 15 '17 at 10:55
  • I didn't find the modifier you are talking about in the modifiers panel

    edit oh sorry actually it is in the modifier panel just didn't understant you had to pick the simple deform modifier with taper option

     – Pascal Nardi Apr 15 '17 at 17:41
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  1. I extrude the bottom ring just a tiny bit like you see on the picture.
  2. Then I took the original loop above and performed edge slide all the way up to where you see the tiny loop up top.
  3. Then I extruded the bottom loop again a tiny bit like the first time.
  4. And finally I made the bottom loop completely sharp.

Smooth Cone

LetTheWritersWrite
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