This is a 3D model of a Kunai, Inspired by the Naruto series. If 3D printed, all that is needed is to wrap the handle in your choice of material. This model is not your plain simple Kunai, its blade has depth and creases, the ball is unique and there was no fake material modeled for the handle.
Also there are molds 3d modeled so that you can print out and use them to cast your own Kunai in Silicone or foam.
The Kunai is also broken into 3 separate pieces in case you are dealing with a smaller 3D printer.