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I'm animating the fold of a paper object. I added a Child Of constraint to the objects, and the target is a bone. The bone is parented to the next object. When I go into Pose mode and rotate the bone, it flips / mirrors after it goes past 90 degrees. (see this video i made: https://www.youtube.com/watch?v=C6BACzgD6hA ) What am I doing wrong?

The file:

enter image description here

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  • $\begingroup$ hello, your link doesn't work, please edit your post $\endgroup$ – moonboots Dec 10 '20 at 15:37
  • $\begingroup$ Hello, I updated the YouTube link. Hope it works now. $\endgroup$ – Jim Dec 11 '20 at 7:11
  • $\begingroup$ maybe share just this part of your object so that we can try? blend-exchange.giantcowfilms.com $\endgroup$ – moonboots Dec 11 '20 at 7:16
  • $\begingroup$ I added the file to the question :) $\endgroup$ – Jim Dec 11 '20 at 7:45
  • $\begingroup$ it has to do with the Child Of constraint, technically I don't know why it flips passed the 90° (it may have to do with the way bone rotation work?), but you can fix the problem by rotating the object's origin (Options > Affect Only > Origins) 180° on the Z axis in order to align its orientation with the bone, you could also choose another constraint, like the Rotation constraint (Axis > Y, Invert > Y, Target > Local Space, Owner > Local Space), or simply parent the object to the bone with a Ctrl P > Bone. $\endgroup$ – moonboots Dec 11 '20 at 8:20

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