After seeing the Quadrocopter by Zaggo, I decided it was time to try printing Sublime's daunting propeller. The only way I could get it to print was vertically at 1.75 x original scale. I had to add a platform directly into the model in order to get the required stability to print the blades vertically. I also scaled the hub by an additional 5% so that the blades fit in snugly without all that bothersome sanding.

Print out two blades and a hub. Gently snap each blade from its circular platform. Snap blades into hub. Add 9 volt battery and a small DC motor for an instant fan.