I once made a Bat'leth, but I messed up the texture when exporting. I can't fix it currently, because I am on the Laptop and my PC doesn't work. Once I get it you can use it if you want:
http://img526.imageshack.us/i/95654558.jpg/
http://img413.imageshack.us/i/35241112.jpg/
http://img204.imageshack.us/i/95986109.jpg/
http://img213.imageshack.us/i/67244207.jpg/
I think I also made a retexture of some Native armor model, to make it look Klingon like, I'll see when I can access my hard drives again.