Following on an earlier comment about the intersection of 3D Printing and Quadcopters, here 's a...

[G+_Jeff Brand]

Following on an earlier comment about the intersection of 3D Printing and Quadcopters, here's a video of someone using a 3doodler-like pen to create a DJI Phantom prop. He uses an existing one as a model, so it's not all freehand but it's fun to watch.

[G+_Bryan Burnett]

Pretty impressive, I wonder what the durability of the prop will be.