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I'm creating a minecraft rig, and I'm a bit unique, and want some smoother bends on the arm as shown:

Bend Arm Now, I'm not fond of the look of the inner part of the bend. I'd like to make the curve look better, so it's closer to the red line as shown. What ways can I accomplish this?

If not possible, I'd like it to be a sharp bend on the inner part. I'd highly prefer the smoother bend on the arm though.

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2 Answers 2

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Why not add an additional bone from the middle of the vertical bone, with a "StretchTo" bone constraint tied to the midpoint of the next bone. Then you can assign the vertices on the inner part of the elbow to the new bone. As the elbow bends, the bone (and the vertices bound to it) should deflect like you are asking.

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  • $\begingroup$ I tried doing that, but not sure if it;s the right way. Is there an image I can rely on to accomplish this? Thanks for your reply. $\endgroup$
    – Ackados
    Jan 30, 2017 at 16:07
  • $\begingroup$ I have never seen anyone do this to put a bone more, this is usually solved with appropriate topology, I have sought that suggestion in practice and do not apply it, in fact I asked a professional and I wonder if I was serious or where there was listen to this, anyway it's just a comment $\endgroup$
    – user58715
    Aug 6, 2019 at 7:01
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you can try something like this

subdivide the mesh as much as necessary until you achieve the effect most similar to what you are looking for.

you can also play with bone weights and give it a more proportional stretch

example

enter image description here

enter image description hereenter image description here

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  • $\begingroup$ The more geometry or tris you add, the softer the shape of the curvature in your mesh should be. That will depend on what you want to achieve. This is just an example to solve it according to your needs. $\endgroup$
    – user58715
    Aug 6, 2019 at 7:04

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