Various embodiments of the present invention relate to circuits for and methods of generating a bias current for a plurality of data transceivers on an integrated circuit. The methods include oscillating the rotary tool laterally with respect to a selected propagation path for the rotating member with respect to the workpiece to define an oscillation path for the rotating member. Each cutting edge of one pair of edges is formed on the same and uniform helix, whereas each cutting edge of another pair of edges is formed on a uniform helix which varies from the cutting end of the body toward the opposite end. The face component has a striking plate portion and a return portion. Detector resonators are connected to the vibrating structure such that when the proof mass resonator oscillates due to the Coriolis force in its sense mode, the connections to the detector resonators are stressed by the proof mass resonator, thus changing the resonant frequency of the detector resonators.