by a conventional machining process or the cuts in the friction plates and or the ribs can be cast in the associated rotor during the casting of the rotor itself as shown in fig2 alternatively as shown in fig2 an electric discharge machine having a single probe 102 or a pair of probes not shown can be utilized to form the desired cuts in the friction plates of the brake rotor 90 39 also as shown in fig2 the cuts can be initially formed in the rotor during step 106 and following this the rotor is finish machined in step 108 in addition as shown in fig2 a cutting machine 150 having one or two cutting tools 152 can be used to form the cuts in the brake rotor 90 34 furthermore the brake rotor of this invention can include one or more cuts formed in the associated friction plates and or one or more cuts formed in the associated fins while the brake rotor of this present invention has been illustrated and described as being a ventilated full cast rotor the invention may be used in connection with other types of brake rotors for example the invention may be used in connection with a 34 uni cast 34 rotor wherein the rotor.