Electronic cutting machine

An apparatus comprising:

• a motor;
• a pinion coupled to the motor, wherein the motor is configured to drive rotation of the pinion;
• a rack engaged with the pinion, wherein the rotation of the pinion is configured to drive linear translation of the rack;
• a housing body assembly configured to hold a working tool, the housing body assembly comprising:
• a lower shoulder;
• and
• a rack guide shaft that extends through the rack such that the rack moves along the rack guide shaft during the linear translation of the rack;
• and
• a spring disposed around the rack guide shaft between a lower surface of the rack and an upper surface of the lower shoulder of the housing body assembly,
• wherein the rack is operably coupled to the housing body assembly such that the linear translation of the rack along a first axis in a first direction is configured to compress the spring between the upper surface of the lower shoulder of the housing assembly and the lower surface of the rack to cause the housing body assembly to move along the first axis in the first direction to move the working tool relative to a workpiece,
• wherein a longitudinal axis of the rack guide shaft extends parallel to the first axis and is coincident with a longitudinal axis of the rack such that the longitudinal axis of the rack guide shaft passes through the longitudinal axis of the rack.