Automatic Weights failing I'm trying to rig a digitigrade model (which is already a challenge in itself), but I've hit an impasse where I try to generate Automatic Weights and it just fails, saying "Bone Heat Weighting: Failed to find a solution for one or more bones". How would I go about fixing this? I'll attach my Blender file.
For this instance, selecting all the vertices and doing Mesh-&gt;Vertices-&gt;Remove Doubles will solve it.



In general, for automatic weight painting, your model must be very clean, with no duplicate verts for example, and not be rotated nor scaled.