Aaaaaahh... those damn gears were so much work. We decided to make the anime version because we thought it was more elegant looking. But it had so many small details, which drove us mad towards the end. I can't belive we finished this.
They are made from F-Boards (which is a lightweight foam board), foil, Worbla's finest art, balsa wood (which is a lightweight wood for model-building), paint, screws.... stuff, yeah. It took us about a month to make them (besides work) and we premiered them at the Animuc 2014 in munich.
The worst thing about them is, that you can't go to the toilet while wearing them ^^" But it's nice that they came out really light and the blades are even detachable from the ... holder.. things. Yeah.