Blender Path Deform Bone Contraint Deforms Mesh I am making a tram model to follow a path, so the &quot;cars&quot; turn naturally. I found this tutorial on Youtube and I have followed it to a &quot;T&quot;, but something has gone awry.
When I turn on the bone constraint &quot;track to&quot; to follow the triangle cube thing, the first bone completely distorts the mesh.
I have done it before, using the same copy of Blender 2.84 (the latest &quot;official&quot; release from Blender) and I cannot replicate results. I have no idea what is going on. Is it just Blender being Blender?
The video I am following.
https://www.youtube.com/watch?v=VXheGvyEz3A&amp;t=1086s
I would ask the guy directly, but comments are turned off and no contact info available.
Here is link to my blend file.
https://www.dropbox.com/s/5ygb9u15ibomi3h/followpathdistort.blend?dl=0
There is another method for this kind of purpose, which is better than this one, given here by Batfinger. That said your problem is just that your vertices are influenced by other bones, if I select one of the 4 back face vertices, here is what I see (by the way, Bone is probably your root bone, you haven't disabled its Deform option):

So simply click on the X button to remove these vertex groups, or use the Weight Paint Subtract brush.