I am done with the rigging on my mesh with bones parented with empty groups. But, when I start creating the keyframes in the animation. the bones position change very oddly by themselves.

This is the keyframes I have created enter image description here

And this is how appears automatically in the animation enter image description here

After this I have to apply Alt+G+R "TWICE" to reset them.

Does anybody knows why and how to solve this?

Thanks in advance

enter image description here

enter image description here


When an IK chain change position in weird ways, it's because of one of this problems:

  • the ik traget location is modified by the movements of one bone of the chain itself: so there is an endless circularity. Check if it has constraints related to any bone of the chain, or if it is child of a bone related to the chain.

  • some bends have a flipped position that can resolve the IK request, so you need to establish a pole target to have full control of the behaviour of the chain

| improve this answer | |
  • $\begingroup$ Hi Josh. Thank you.Yes I think it has to be something related with the constraints because The machine has three arms holding the bucket, so I tried to parent them to the bucket which is like three different bones parented to one vertex group. I will post images in the post (bottom) so you can see what I am talking about. I think those bones are causing interference to each other. Do you know a better way to parent those three arms of the machine to the bucket? How can I Make this three arms (right arm, left arm, last central arm) get attached to one single vertices group which is the bucket? $\endgroup$ – NATURU NATURYU Apr 3 '17 at 17:19
  • $\begingroup$ Right and left arm should have the same dynamic of movements but the central arm is different. this should rotate the bucket in its own axes. $\endgroup$ – NATURU NATURYU Apr 3 '17 at 17:25
  • $\begingroup$ If you need more help I think you should upload your .blend file: it's difficult to understand the rig from the pictures $\endgroup$ – josh sanfelici Apr 3 '17 at 18:08

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