I know talk is cheap, but every time I look at a 20-b e-shaft
I can't help but thing that it's a no-brainer to cut on any decent
CNC lathe.  I'm sure there's a bit more to it than turning a hunk
of steel and hardening the crap out of it.  Anyone have any
in site into what's *really* involved in making a 3 rotor e-shaft?  I
know a few others have done it.

Thanks,
Bob

I think you are pretty much right.
I think you need to grind and polish it after it is turned
and heat treated.