I have just started learning character modeling and rigging, so this might be a really basic question. What do I do so this type of deformation doesn’t happen? You can clearly see it in the arms.
Thanks.
There could be more than one thing going on here. There’s a possibility for the bones to be in the wrong places, there’s a possibility that the mesh has a transform relative to the armature. Can’t ever be ironclad in answers without a file, there are too many details involved.
But, probably, check the weights. If a vertex does not track a bone completely, it is because it is weighted to additional bones.
Note that a mesh like this looks very low poly, and volume loss is going to be a significant concern for a low poly mesh in this pose, regardless of weights, but you’re seeing more than volume loss (although, what you’re seeing may be because of an attempt to compensate for volume loss.)
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