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I have created a sphere on top of a cube as follows:

enter image description here

And have set the sphere to be a child of the cube:

enter image description here

Then I added an armature to bend the square like this:

enter image description here enter image description here

The thing is, since I set the sphere to be a child of the square, I have expected that from now, when I bend the square using the armature, the square would follow it. But it doesn't:

enter image description here

How can I set the sphere so it would follow the direction of any bending I do to the square?

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  • $\begingroup$ Use Object > Keep Transform rather than just Object on the Parenting menu. $\endgroup$
    – John Eason
    Jul 29, 2023 at 10:45
  • $\begingroup$ That doesn't seem to work :/ $\endgroup$
    – Eule
    Jul 29, 2023 at 10:51
  • $\begingroup$ Do yu want the sphere to follow the centre of the face? If so I guess you'd have to add a vertex in the centre of the face by Joining the verts at the opposite corners and then subdividing the edge that's created. Then read up on Parenting in the Blender Manual. I guess you'd need this section although I've never used it. $\endgroup$
    – John Eason
    Jul 29, 2023 at 11:12
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    $\begingroup$ i had exactly this problem literally now with my face rig where the eye balls got left behind despite parented to the face. my solution was to select the eye balls and then select the armature and go into pose mode. then shift click the bone and press ctrl+p > with automatic weights. so in your case its the ball parented to a bone in pose mode. $\endgroup$ Jul 29, 2023 at 11:40

1 Answer 1

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  • Select the Sphere then Shift click the armature
  • Go into Pose mode and Shift click the top bone
  • Press Ctrl+P > With Automatic Weights

enter image description here

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  • $\begingroup$ Unfortunately that didn't work when I tried it because the sphere doesn't follow the face of the cube as the bone moves. Mind you, your answer has been accepted so presumably it worked for @Eule. $\endgroup$
    – John Eason
    Jul 29, 2023 at 13:37
  • $\begingroup$ i attached a gif for better understanding :) $\endgroup$ Jul 29, 2023 at 13:55
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    $\begingroup$ Hmm. Ok. I believe you! :^) I've deleted my test file now so can't check what I did wrong... $\endgroup$
    – John Eason
    Jul 29, 2023 at 16:29

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