Abstract: A new mixing drill with speed sensing with multiple preset speeds for providing a display of drill motor speed while mixing for indicating the viscosity of drywall joint compound and plaster mixtures and providing a quick and easy method of mixing drywall compound to a specific consistency. The inventive device includes an electric drill, an on off switch, a detachable drill bit with vanes, a drill chuck with a magnetic marker, a magnetic sensor attached to the drill body, a drill speed counter, a motor controller, a keypad, a micro controller and a digital LCD display for displaying drill target speed setting and alternatively displaying the actual speed to target speed ratio for indicating viscosity of a mixture.