Originally Posted by
Chilepines
Does anyone know of a source for custom CNC machining of cassette cogs? I expect it is going to be very expensive as a one-off, but really don’t want to change my entire drivetrain.
I’m also not sure this is the best forum for this question so if there might be a better place to ask please let me know!
You could always make one, using nothing more* than a bench drill, hacksaw and file. And a sheet of dural. The HPV people sometimes make oversize chainrings, they probably have the information you'd need for marking out the teeth.
* obviously it would be easier with a CNC mill, or at least a rotary table for the drill, but you
could do the whole thing with nothing but hand tools. This guy does it with a 3D printer and a router: