Knives used by Feyd Rautha in the fighting arena.
Models according to the trailer of the second part of the movie Dune.
To join the Black Knife, you will need two rods of 3 mm in diameter and a length of approximately 500 mm. In the case of the White Knife (smaller), you will need 250 mm rods.
If you can't find any proper material as a rod or don't want to use reinforcement, I included a printable joint piece.
Complete model and divided into separate parts that can be printed on a standard-size filament printer (such as an Ender3)
Parts can also be printed on a medium resin printer (such as a Photon Mono X)