The HMLETK-BONE from PACTEC is a modularly designed extruder controller and drive system that allows for advanced control of 3D extruders. The system consists of a base controller, motor controllers, and hotend encoders. This system provides precise control over the positioning and temperature of the extruder, the speed and direction of the drive motor, and the force and resistance of the extruder material. The HMLETK-BONE controller also integrates a suite of safety features that monitor the system and alert the user if anything is amiss, such as over-temperature conditions. The HMLETK-BONE is designed to be simple to use and versatile, making it a great choice for any 3D printer.