Abstract: In accordance with the present invention, the drone includes a frame having a plurality of arms, a plurality of rotors connected to the plurality of arms, and propellers fixed on the plurality of rotors. The drone also includes an arm hammer part disposed on at least one of the plurality of arms and a rotor hammer part disposed on at least one of the plurality of rotors. A structure capable of destroying a glass window at once is mounted on the quadcopter drone, and a number of quadcopter drones, corresponding to the number of glass windows that need to be destroyed, are coupled so that almost all glass windows of a building where a disaster has occurred can be destroyed at once. As a result, evacuation and rescue activities for people trapped inside the building can be performed efficiently and safely through glass windows, and flexible response is possible even in situations where it is difficult to destroy glass windows from the inside during a disaster.

Abstract: A 3D printer with fine hole processing function in accordance with an embodiment of the present invention, comprises: a build plate, a first laser unit, and a second laser unit. The build plate is disposed in a photocurable liquid resin contained in a water tank. The first laser unit is disposed on the water tank and the photocurable liquid resin, and irradiates a first beam to the photocurable liquid resin on the build plate to cure and laminate the photocurable liquid resin one layer by one layer on the build plate thereby forming a structure. The second laser unit is disposed to be spaced apart from the first laser unit by a predetermined distance, and irradiates a second beam to the structure where the photocurable liquid resin is cured and deposited on the build plate thereby forming a fine hole. The first beam is an ultraviolet laser beam for curing, and the second beam is an ultraviolet solid laser beam having a laser drilling function.