Rigging mesh with vertex weights: different weights have the same influence I'm trying to rig a simple plane of few vertices with one bone, such that different vertices would deform with a different amount when moving the bone. I assigned different weights to the vertices, but all vertices are influenced as if they have full weight, and I don't know what I'm doing wrong.

Here is what I did:

1. Create a simple plane:



(I applied scale and rotation, if that's important)

2. Create armature with one bone:



3. Parent bone to plane with empty vertex groups:



(In object mode: select plane, shift select bone, Ctrl+P, With Empty Groups)

4. Paint plane vertices with different weights:



(select bone in Pose Mode, select plane in Paint Mode, and paint) 

5. Rotate bone around Y axis (in Paint Mode or in Pose Mode - same result):



and all vertices are rotated exactly the same amount. I also tried assigning weights directly to each vertex:



any weight of 0.0001 or above influence like weight 1.0, and below that has no influence at all. Here, for example, I assigned 0.00009 to the two leftmost vertices:



Do I miss something in the process?
Even with a weight of 0.001, the vertice will be part of the group and the bone will displace it 100%. I think 0.001 must be the lowest value you can enter. But if you create a second bone, parent it, then give a weight of 0.002 to some of the vertices (vs 0.001 for the same vertices in the previous vertex group), the influence of this second bone on these vertices will be twice the influence of the first bone.