Just a small addition to how I tackled the challenge:
- on my hinges, I selected the vertex ring
- cursor to selected
- make sure the Y of the cursor is correct (not 0 in my case, but I guess in the lectures it is)
- select the bone tail
- selection to cursor
Et voila, I am sure that my armature is accurately following my geometry … Not sure how important such accuracy is, or whether just “by eye” positioning suffices …
