Abstract: An improved attenuator for damping vibrations and noise when disc brake rotors are being machined in a machining lathe. The improved attenuator has a handle comprised of a squared end with legs extending at angle of 100° to the squared end toward each other. Damping pads are mounted on the ends of the legs to press against the surfaces of the rotor being machined. The 100° angle of the legs toward each other improves the biasing force against the rotor surfaces. Additionally, the damping pads are provided with a notch that fits around and over the tips of cutting bits of the machining lathe to securely hold the pressure pads in place. Another improvement includes a fastening strap attached to the squared end of the handle that wraps around a biasing spring and the carriage on the machining lathe to securely hold and maintain the position of the attenuator.

Abstract: An improved attenuator for damping vibrations and noise when disc brake rotors are being machined in a machining lathe. The improved attenuator has a handle comprised of a squared end with legs extending at angle of 100° to the squared end toward each other. Damping pads are mounted on the ends of the legs to press against the surfaces of the rotor being machined. The 100° angle of the legs toward each other improves the biasing force against the rotor surfaces. Additionally, the damping pads are provided with a notch that fits around and over the tips of cutting bits of the machining lathe to securely hold the pressure pads in place. Another improvement includes a fastening strap attached to the squared end of the handle that wraps around a biasing spring and the carriage on the machining lathe to securely hold and maintain the position of the attenuator.