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I'm following this tutorial, trying to rig a simple armature to open the flaps of a box.

In the section at 5m38, he rotates the armature to bend a flap.

All of my flaps work fine, except for the front flap, which doesn't bend enough. When the armature is rotated to 90 degrees, the flap only gets to about 45 degrees:

enter image description here

I've assigned and removed the vertex groups several times, but can't work out how to get it to work like all the other bones. What am I doing wrong?

Blender file: https://file.io/apJjRMPoi7w7

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  • $\begingroup$ can you add your blend file to your question? (How to add a blend file) That behavior looks like the flap's vertices are also in the vertex group for one or more other bones. $\endgroup$ Apr 26, 2022 at 16:55
  • $\begingroup$ added to the question - many thanks $\endgroup$
    – tomh
    Apr 26, 2022 at 17:00

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As you see this vertex is part of the vertex group called L while it should only be part of the vertex group called F:

enter image description here

So select all these vertices and remove them from the vertex group called L:

enter image description here

And also probably remove all these vertices from all groups:

enter image description here

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    $\begingroup$ Thank you very much! $\endgroup$
    – tomh
    Apr 26, 2022 at 17:19

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