This rather glam looking variant is (it would appear) a bit of a leap forward in that the corner bits are a) massively simplified and genericised and b) when combined with a stepper motor and the right bit of software, allow for the construction to be done semi-automatically, obviating the need for fiddly measuring and so on.
It’s looking like the threaded rods might be a vitamin-part for the foreseeable future mind. I wonder if you could make them by wrapping a bit of string round a dowel or something.
Don’t mind me. Chatter from the cheap seats etc