Customizable Impeller with Hub

I wanted to have an easier-to-print turbine for my build of https://www.thingiverse.com/thing:2790645. This customizer looked to be a good starting point. I added some options for building in a hub designed to mount on a 28mm outrunner brushless RC motor, and fit in the same space and shape as the originals.

This will allow me to try some custom variations to make it easier to print, and let me work on maximimizing performance.

Attribution:
https://theheadlesssourceman.wordpress.com/201