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I am importing an SVG shape and rotating it using the screw modifier.

I have applied the Shade Smooth on the two examples below.

enter image description here

On the left, the object is still a curve with the screw modifier, and on the right, it is converted to mesh.

On the mesh, I have checked that I have "Clear Seams" and "Clear Sharp" edges on edit mode, but I still have flat reflections.

The specific problem appears when I activate the Auto Smooth checkbox, so I get rid of the ridges of geometry on the left, regardless of the Auto Smooth angle (right).

enter image description here

Can you please tell me how to smooth this?

Here is the file: http://otake.com.mx/Foros/Blender/Bottle.blend

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1 Answer 1

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Your bezier version has its Fill Mode set to Both, it looks like when you convert it to mesh it creates inner faces that are connected to your outer faces (edges must not be connected to more than 2 faces) and that mess up your geometry, so switch it to None, convert, and it works fine. Also don't forget to recalculate the normals (ShiftN).

enter image description here enter image description here

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  • $\begingroup$ Thank you, that worked :o) $\endgroup$
    – Rafael
    May 21, 2020 at 23:45

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