Quote Originally Posted by Nihonddd View Post
Once the love affair with 3D scanners has subsided I bet you end up just modelling it from scratch(like SF suggested).

No, but seriously, you could model a propeller in maybe 1000 vertices.
For the propeller might be the best idea, for the eyewear I'm now working on having a 3d mesh as a guide is really useful.
Every case will need to right tools.