The Set
The set consists of twelve beams, eleven of which are different. All have two cubed sections that consist of either a rod (1/4 of a section) or three hooked 'halfcubes' that are each actually 1/8 of a section.
Typically three beams connect with a section consisting of one 'rod' and two 'hooks'. The rod allows one beam to rotate a quarter with regard to the other two, a feature that must be used during assembly.
Thus F must be hooked around rod B, that must next be rotated a quarter and back to allow insertion of G.

And same with E and K.
Same here.
Next the two halves are connected using the A beams, simultaneously rotating them in opposite directions, to click everything into place.
For many, disassembling it is already a puzzle :)

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