A concept I had for Nightwing's batarang from A Joker's Card, a locally produced fan film parody by MDI film..  Shown in the open position. Original made of bass wood, molded in GI-1000 silicone and cast in smooth-cast 325.  A small hinge connects the two halves.  From this an open back silicone mold was made and additional castings were made.