The following article is taken from my announcement on the TwistyPuzzles forums on 10/2012.
The fourth puzzle in my Radiolarian series of face turning icosahedra (leaving out a minor one).
This is another puzzle I sketched up in 2010, but I never finished the parts or printed it, and I was beat to the punch by Eitan Cher (pirsquared). His version has been called DeFTI and Eitan’s Star. I’m showing this version with his permission.
My version has an identical mechanism to my Radiolarian 3, and only the outer cuts are modified to change the relative sizes of the parts. Turning is very nice.
I show the jumbling in the video.