Instructions
Set the puzzle on a surface. From here on the right piece of metal will be referred to as "B," the left piece as "A" and the bottom as the base.
Detach B from the base, and move the base upwards.
Insert B through the base while rotating it at the same time.
Lower both B and the base when you have rotated B enough to allow the movement.
Place the pieces in the position where B is at the bottom and the base is at the top, with A adjoining the two.
Rotate B, and twist it until it can detach from the base completely.
Slide the base off to separate all three pieces of the puzzle.