And I doubt you will.

Lets be real people, it's a rotor. It's t6061 hat made from a block of aluminium. Turn CNC machine on, hit go with correct program, done!

Now I'm no metallurgist so i cant comment on everyons rotor metal but I know z1 doesn't make these! They had an idea, vane design, slot pattern and that's it. They maybe have sold less than 100 but the rotor manufacture has made millions!