# Trouble with bone constraints and deformations

I am trying to create something with this effect, but the instructions are very unclear about applying the bone constraints. It has to do with copy rotation and the damped track constraint, but I don't know how to use them. I am trying to fix these odd deformations in the shoulder area of my character.

Here's what I'm trying to achieve

Here's what I have so far

Here you can see the awful shoulder deformations I'm trying to fix

I know another user had a similar question, but the answer failed to explain the usage behind the constraints used. In fact, the example animation in which I'm trying to achieve is taken from an answer to another question similar to mine. Shoulder Deformations Question

• I highly recommend viewing the tutorial series by Nathan Vegdahl, Humane Rigging. It will teach you everything you need to know about rigging and the tutorials are well done. Mar 21, 2018 at 3:18
• I found that none of the videos had to do with rigging humanoid figures. I already knew most of the information he says. What I'm asking for specifically in this question is how to fix my deforming shoulder using the constraints used in the example animation Mar 21, 2018 at 4:02
• Mar 21, 2018 at 4:36
• The first link is the very place where I got the example animation and could not find an explanation for the bone constraints. The second link deals with vertex groups and bone weighting which I already know how to do. The last link is a collection of other solutions that do not answer my question. Basically what I'm asking for is how to set up the constraints to achieve the result in the example animation. Mar 21, 2018 at 4:56
• Good news! You can download and study the exact rig you're talking about here: https://www.blendswap.com/blends/view/7093 Mar 29, 2018 at 18:37

One simple solution is tho set all bones constrained with a copy rotation, varying the influence setting from none (Shoulder) to full (hand).

• what are each of the bones constrained to? I think this is the part I am having trouble with Mar 21, 2018 at 23:57
• every bone is constrained to the "Kontrol" (non-deforming, circle custom shaped) bone. In my example the hand bone has full constraint, the forearm bone (selected) has 0.66 influence, and the upper arm bone has 0.33 influence. So when I rotated the Kontrol bone by 90 degrees, the hand rotated 90, the forearm 60 and the upper arm 30 degrees (aaproximately). the shoulder stays still for balancing the upper arm vertices. Mar 22, 2018 at 11:40