Have your butler clear off your work bench. Put your billion dollar company on hold! You have some weapons to make! Or you could just have Wayne Enterprises make these awesome batarangs. However, since most of us are not Bruce Wayne, we will just have to do it ourselves.
Instructables contributor Triumphman built this amazing folding steel weapon himself. He used an angle grinder to cut the shapes out of steel, then drilled a pivot hole. After that he smoothed and sharpened the edges, painted it, and screwed it together.
It looks great and folds up nicely to tuck into your utility belt. Head over to Instructables for the full details on how to make one for yourself. It looks pretty straightforward if you know how to work with metal and you have the right tools in your lair. No doubt, it looks horribly dangerous for the rest of us.