OK, I am new to rigging, so hopefully this is an easy question to answer. I've got a finger rig, which I made by following a book, to be specific, the Second Edition of Oliver Villar's book, Learning Blender. Here's a picture.


The big bone, called C_Finger_1, is the bone I use to control the finger. When I rotate it, it rotates all the fingers, as it should.

However, when I scale it down, it should flex the finger, but it doesn't. The fingers do nothing, except they flip when I scale the C_Finger_1 bone past -1.

I am very much a beginner to this sort of thing. Could anyone point me in the right direction?


You need to:

  • Deactivate the IK's rotation option (don't know what is for, it's off by default):

enter image description here

  • Bend the bones a bit in Edit mode so that Blender knows how to flex it.

enter image description here

  • Once bent, correct the Pole Angle of the IK bone:

enter image description here

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  • $\begingroup$ Thanks! It's so nice to see the IK work after your work! $\endgroup$ – RBlong2us Aug 22 '19 at 19:30
  • $\begingroup$ The reason why the Rotation was checked was because I had turned it on, seeing if it would fix the problem. Thanks a whole lot for answering so quickly! $\endgroup$ – RBlong2us Aug 22 '19 at 19:31
  • $\begingroup$ It seems to me, that it should be able to flex without you bending the bones downward. Seems like you should have a direction of flex or something. Doesn't really matter a whole lot. I had a character with fingers that were completely straight. So what I did was I bent the bones downward by .001. $\endgroup$ – RBlong2us Aug 22 '19 at 19:33

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