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I am doing my first rigging in Blender. I am following this and this youtube videos.

My armature looks like this from the front view:
enter image description here

When I move the inverse kinematics "target bone" up in the z-axis, it moves like seen in the screen shot below. I want the knee to move directly towards to the "pole target", but instead it slightly strays away from it.
enter image description here

My inverse kinematics settings are like this:
enter image description here

My copy constraint settings are like this:
enter image description here

How do I make the knee bend towards strictly to the forward direction where the target bone resides?

Edit: This is my current design file.

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  • $\begingroup$ maybe bend your knee a bit forward in Edit mode? If it still doesn't work please share your file $\endgroup$
    – moonboots
    Apr 22, 2022 at 9:45
  • $\begingroup$ I agree with moonboots. There's another very recent YT video on leg IK rigging here $\endgroup$
    – John Eason
    Apr 22, 2022 at 10:04
  • $\begingroup$ @moonboots I had already bent it a little bit in the forward direction. I also edited my question and added the design file at the end of it. $\endgroup$
    – hkBattousai
    Apr 22, 2022 at 12:08

1 Answer 1

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You need to slightly bend the knee forwards, and also the pole target in order to move it a bit away from the knee:

enter image description here

It seems to work:

enter image description here

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  • $\begingroup$ I has already bent the knee in the forward direction, but after your message I bent it even more and moved the pole even further away. Now it works, thank your. But I still don't understand the reason why it didn't work first time. I thought bending the knee just a little bit was enough to tell Blender how to solve the IK problem. I also thought that the direction of the reference pole was important but not its distance from the bone object. $\endgroup$
    – hkBattousai
    Apr 22, 2022 at 12:42
  • $\begingroup$ I can't tell exactly why it wouldn't work in the first place. For the pole target, the distance doesn't count, it's just that you need to make sure that the pole will still be in front of the knee when you'll bend it $\endgroup$
    – moonboots
    Apr 22, 2022 at 12:45

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