I'm trying to smooth cone's side like I did for a cylinder using
Edge Split and
How can I prevent this?
Blender Stack Exchange is a question and answer site for people who use Blender to create 3D graphics, animations, or games. It only takes a minute to sign up.Sign up to join this community
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).
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.