Model sword from the popular anime Attack on Titan. Functional sword, all buttons and lever push. The blade snaps inside and pulls out with the trigger. The demo briefly shows the assembly process.

Additional parts:

1. 2 compression springs ( diameter 8-10 mm, length 15 and 20 mm )
2. 1 extension spring (length 7-10 mm, diameter 3-4 mm)
3. 1. torsion spring ( diameter 3-4mm)
4. 2 screws ( 16x3 mm )
5. 3 bolts ( 20x3 mm )
6. 1 bolt ( 16x4 mm )
7. 2 rods ( diameter 2 and 4 mm )
8. The aluminum plate for the blade elements (width 15mm, thickness 2mm). The length depends on how long you want the blade and how many segments you print.