Knife modelled under the inspiration of the movie Chronicles of Riddick starring Vin Diesel. This is NOT an exact model to the movie prop but is fairly close in dimensions and overall form from which can be the basis for modifying it to become a close replica with good modelling craftsmanship. The blade required a ton of memory to form in the shape of a blade (it is angluar not conical in form), but if 3D printed as a solid (200 grams), it can be sanded down and shaped to a pure blade form. Detail on the handle can also be increased similarly by printing as a solid and dremel tool engraving, puttying etc. to the desired form as found on the movie prop.

This should be enough to go on for an average skilled modeller. More pics to follow as it gets built.