Boeing 777-200 Scale 1:1000
My favorite slicing software is Cura, I will explain the printing process to just assembling:
3D PRINTING SETTINGS Speed: 15-30mm/s Travel: 120mm/s Material: PLA (210°C hotend, 55°C heatbed) Brim: 3mm (Outside) Draftshield: 4mm (Full) - all landing gears