A detachable power supply apparatus for use with electrical appliances including removable temperature control devices includes a mounting panel on the temperature control device to which an electrical connector on a power supply cord is magnetically and electrically coupled. The system includes a distribution box having connection points to receive power from a power supply and connection points to receive control instructions from a control system. As a result, the linear solidification device scans a line of solidification energy in a direction that is substantially orthogonal to the direction of travel of the laser diode. A second input signal is received from a load at an output of the reference buffer. The global reference system prevents unintended tooth displacements caused as side effects to the desired tooth displacements.