This model was made using a 3d printing printer Use electricity + gunpowder to launch. Besides 3d printer, you need other tools for making, such as electric soldering iron, pliers, needle, seamless steel pipe. Printer settings: Use FDM type printer Printing consumables use petg, nylon, carbon fiber, or stronger consumables Nozzle diameter 0.4, print layer height 0.2, outline 4, bottom layer 4, top layer 4 The filling density is 60% or above, and the filling shape is triangle

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