This is the wrench used by the engineer in tf2. It should be easy to understand and assemble as it only has 5 pieces. Also hint to a future papercraft: what is the sniper staring at?
How to Print?
1.Click on the papercraft design image.
2.Make sure it has not been resized by your browser (you might need to click the image again).
3.Print using your browser's Print function.