This turned out incredibly well...so impressed! I LOVE animated, and you nailed the scale of this dude! WAY more intimidating and the sculpt is sublime.
There is a little partsforming, but just the backpack/nacelles. No more than the original toy with the power-staff/tail.
Here's the animation of the transformation. (also linked in the OP): https://www.youtube.com/watch?v=MFBa_TXEbpA
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3D modeling for 3D printing: 3d.tryop.com