How do you cut a K30 rotary valve?

Ted Hamilton

Design Drafter / Racer
I suppose you could have it water jetted somewhere. And I've seen carbon fiber rotary valve discs too, and I think water jet works for those too.
A CNC router would be another option.
I have a few rotary valves that I would part with
These are not reinforced
Pm me ur # and I’ll send pics or I can call ya