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enter image description here enter image description here

This is two half-sphere snap to each other by the center line. I am working on a modeling project which run into this problem.

I want to make it like a whole sphere while render it out, but it like this

enter image description here

The vertex at the center line are perfectly aligned.

And I would like to keep it two objects.

Is there any way to make it like one single object but without that center line?

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  • $\begingroup$ Do you just want to cut 1/4th of the circle with faces inside? $\endgroup$
    – Yash
    Commented Mar 6, 2019 at 8:01
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    $\begingroup$ What about boolean modifier? $\endgroup$
    – Yash
    Commented Mar 6, 2019 at 8:04
  • $\begingroup$ Could you post a link to download the .blend file so we can have a look? $\endgroup$
    – Nobinberg
    Commented Mar 6, 2019 at 8:54
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    $\begingroup$ Possible duplicate of Why are some faces in my mesh darker? $\endgroup$ Commented Mar 6, 2019 at 10:59

1 Answer 1

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I think there are two reasons here for discontinuous smooth shading.

  1. The normals are flipped on the right half ... CtrlF > F, Flip normals
  2. The normals haven't got anything to interpolate to over the edges of the hemispheres.

To fix (2), retain an intact version of the sphere as a form, same topology, same location, and transfer the normals from it to the 2 halves, by giving them Data Transfer modifiers, with the intact sphere as target, and the settings shown. You will have to set 'Autosmooth' on the hemispheres in their data tabs.

enter image description here

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