Is Disney Research really making cast parts for their prototypes, or are these is this off-the-shelf technology from somewhere else? http://spectrum.ieee.org/i

Is Disney Research really making cast parts for their prototypes, or are these is this off-the-shelf technology from somewhere else? http://spectrum.ieee.org/img/fluidtrans2-1412583381292.jpg http://spectrum.ieee.org/img/fluidtrans2-1412583381292.jpg [edit] Nevermind, in other photos it is clear that the parts are machined. I'm still surprised they've gone to such lengths to remove weight in the prototype, but that's more of a cool thing than something truly unexpected.