Originally Posted by
AnkleWork
First start with cones that are capable of being restored.
This^^^^
Slight pitting might be restored by the method Mad Honk suggests. The pitting in the cones shown is severe: I don't think that one or two thousandths of an inch (2.5 to 5 hundredths of a mm) will do. Again, if buying via the interweb is dicey, look for a donor wheel and steal the cones from that.