This is a video of the opening mechanism. The box and all the tubes are temporarily fastened with the black gunk you see around the tubes. It is some sort of industrial blu-tak (very sticky but never solidifies or dries, I got it from a friend working with carbon fiber).

Also here the dial is  not connected and I'm manually engaging the opening mechanism. Just to get a sense for how the end result will be. It is very noisy when opening I noticed.