I am trying to weight paint using blender 2.73a, but no matter what weight I assign to a vertex or what shade the weight painting is it always gets influenced 100% by the armature/bone.

Has anyone else had this problem?

I add this picture of a cylinder and one bone. As can seen the weight paint is not uniform, but the entire cylinder follows the bone.

enter image description here

Or am I totally not understanding weight paint.

I also add a link to the blend file below: blend file of cylinder with bone

  • 1
    $\begingroup$ If you isolate part of the model and load the .blend to PasteAll.org and paste the link here, someone may be able to find what is wrong. $\endgroup$ – MarcClintDion Feb 18 '15 at 5:06

This is how weights work.

The weight doesn't define an influence of a particular bone; It describes the Mix factor of influence between multiple bones.

So a vertex with 1% weight on one bone and 0% on all other bones will be 100% influenced by the 1% bone.
A vertex with 1% weight on one bone and 50% weight on another bone will be almost entirely controlled by the 50% bone.

In other words, a vertex is always influenced 100%. Weight only controls which bones do the influencing.

To get a result similar to what I think you are expecting, add a second bone weighted to all the vertices by 100%. Now the first bone's weights will cause non-uniform influences, as you might expect.

  • $\begingroup$ Thank you for the feedback. I must say I'm slightly disappointed that a lower weight value would not simply soften the effect of the bone. I'll play around with it. $\endgroup$ – pietvdwest Feb 18 '15 at 19:48
  • $\begingroup$ @pietvdwest You can achieve this "softening" effect by mixing in another (static) bone. I tried to describe this in the second half of my answer, but I don't think I did it very clearly.. $\endgroup$ – gandalf3 Feb 18 '15 at 22:34

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