Wallboard electrical box cutter having a cutting chain

An electrical box cutter for cutting a rectangular opening in wallboard comprising:

• a housing having a rectangular chain track therearound;
• a sprocket positioned centrally within the housing;
• a shaft positioned within and secured to the sprocket having a cutting end projecting forwardly through the housing, and a drive end projecting rearwardly through the housing;
• a loop of chain positioned within the track and on the sprocket so that it may be driven thereby, said chain carrying cutting teeth adapted to cut in a direction towards the front of the housing;
• so that when the shaft is turned its cutting end cuts a guide hole in a wallboard, and its chain teeth thereafter cut a shape in the wallboard corresponding to the rectangular chain track.

A method of cutting an electrical box opening in drywall with an electrical drill comprising the following steps:

• determining the position of the electrical box opening to be cut;
• mechanically connecting the drill to a drive shaft of a cutter of the type having a housing having a rectangular chain track therearound;
• a sprocket positioned centrally within the housing;
• a shaft positioned within and secured to the sprocket having a cutting end projecting forwardly through the housing, and a drive end projecting rearwardly through the housing;
• a loop of chain positioned within the track and on the sprocket so that it may be driven thereby, said chain carrying cutting teeth adapted to cut in a direction towards the front of the housing;
• so that when the shaft is turned its cutting end cuts a guide hole in a wallboard, and its chain teeth thereafter cut a shape in the wallboard corresponding to the rectangular chain track.