This is the Red Hood's knife, from the animated movie Batman: Under the Red Hod. I created it as a loose approximation of the one from the movie (its really hard to get a good shot, and the proportions change every time...) as a prop for cosplay. The hilt, when printed as upload is 143mm tall. If someone needs the individual pieces split up or the whole thing split down the middle, let me know.
I made the blade out of laser cut foam, sanded on a belt sander to fit. The tang and overall blade width would be at 8mm if printed at the uploaded scale, so if someone wanted to print out the attached vector and cut the blade out of metal or wood, that's how thick the material would need to be. I didn't model the blade, I only made the outline.
The biggest problem with this is getting a sheath that looks anything like the one in the movie, and still fits the blade. I made one out of foam, but I wasn't happy with it. If someone else comes up with one, remix this for sure.