Abstract: A device for "dressing" welding electrode tips is disclosed. The device utilizes an integrally formed air motor, retained within a housing member, to drive a gear train which rotates the welding tip cutters. The air motor is actuated by relative longitudinal movement, in either direction, between the housing member and a carriage member which acts as the base for the device. The longitudinal axis of the air motor is parallel to the direction of travel of the housing member with respect to the carriage member thus eliminating the need for bevel gears in the gear train.