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I need to adjust/rotate the axis of the object, not affecting the object rotation. Only rotate the axis. Is it possible, and how?

Explanation: As you can see on the image. I have a network of balls and connectors. I duplicated these elements using Shift+D and then rotated and adjusted so it all creates this network shape. Now I want to continue duplicating and adding more to the network, but now the axis are all messed up already. As drawn on the image, I can't rotate the one connector down anymore (marked in red). The axis are messed up. So I need to adjust the axis, so I can rotate around one of the axis, doesn't matter which one. I know about the Transform Orientation tools in the N panel. But I can't find any element which would produce the correct axis rotation.

Side note: The build up of the network is animated. In fact the connector has to build up along a correct axis. I do it using shape keys.

enter image description here

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I propose another approach, trying to simplify your issue.

It uses curves and hook:

enter image description here

How to set it up:

  • Create a segment (starting from a plane)
  • Place each extremity to the center of spheres
  • Turn it to curve AltC
  • Hook CtrlH each to the corresponding sphere

The hook works like this:

  • Select the object to hook to
  • Shift select the object to hook
  • Enter edit mode
  • Select the vertex to hook
  • Hook CtrlH
  • And choose "to selected object"

enter image description here

After that, depending on your needs, you can turn the curves back to meshes or keep them and animate using "start" or "end" bevel options in the curve properties panel (that can replace the shape key animation you talked about).

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I think that the axis are messed up because you didn't apply the transformation rotation to the object.

You can clear the rotation transformation this way:

enter image description here

But, if you don't want any problem at first, you could apply the rotation transformation at the creation of the object:

enter image description here

I hope that it will help you :) .

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