So another week and yet more progress. This bookcase has definitely gone together better than the 1st one. I learnt from my mistakes and took extra care to ensure that the shelves were all the same length and were definitely square when glued in place. This means that the sides are nice and straight, whereas on the first bookcase one side had a significant bow in it, that needed hiding with the face frame and careful placement in the room it went into.
Anyway, here is the film of the 3rd part, enjoy: