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So I have an Object that is orientated in the World like this:

Object orientation

Even dough, the object is located and rotated with 0 values in all axes, the planar part (bottom / not round) of the mesh is not align with the X axis like intended.

I have already changed the origin, to the place that I want using the "Set Origin".

enter image description here

But what I really need is to change the orientation of the mesh, and I don't know how.

Normal

This probably happened because of some transformations that where made in the Mesh or something like that. So here the Mesh is rotated and not the Object, and I need this the other way around, the Object rotated and not the Mesh. So the orientation of the object and the orientation of normal of the planar parte of the Mesh precisely parallel, and not changing the form of course.

So, how do you do this?

What is the proper way to handle things like this?

Thanks for any help in advance.

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  • $\begingroup$ One way: Rotate in object mode about z axis such that it is aligned. Copy the z rotation value. Apply rotation (ctrl - A). Then paste in rot and negate. $\endgroup$
    – batFINGER
    Jan 31, 2018 at 15:21
  • $\begingroup$ Thanks @batFINGER! The problem is that it will not be precisely parallel, it could be close, but is not the same. So this is absolutely necessary! Lets face, for computers this should be easy like copying the rotation of the normals of one plane in the Mesh to paste in the rotation of the object, or something like that. Shouldn't it be? Is it possible with Blender? $\endgroup$
    – user38561
    Jan 31, 2018 at 15:34
  • $\begingroup$ Simplest way is first one shown in the linked answer, adding dummy object, snapping it to surface of what to align, parenting and resetting rotation of dummy object $\endgroup$
    – Mr Zak
    Jan 31, 2018 at 15:52
  • $\begingroup$ it looks to me like it's out by (90 / 8) degrees about the old origin. Could use snap tools in UI, or use some vector math to get the angle. Put the cursor on radial vert and use its x, y, z to find angle (in radians) from the x axis angle = Vector((1, 0, 0)).angle(Vector((x, y, z)) (oops had z axis not x axis reposted) $\endgroup$
    – batFINGER
    Jan 31, 2018 at 15:58
  • $\begingroup$ So I guess it is not possible at the moment with blender in a simple way @MrZak, and this like that question that can give some ideias, not not with out some work. Since it passed 3 years almost… Thanks anyway! $\endgroup$
    – user38561
    Jan 31, 2018 at 16:22

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