====Laser Cutter Mechanism==== ==Purpose== This mechanism moves a vertical protrusion up in a controlled manner and then drops it suddenly. ==How it Works== The half-gear turns counter-clockwise, which moves the rack up. The rack suddenly drops when it reaches the part of the gear that has no teeth on it and is pulled down by a spring. {{:labinfo:people:students2011:teamone:100_1048.jpg?400|}} *collaboration with Grant Aarons