While 3D printed guns have made the headlines for some time now, other 3D printed weapons may also eventually arise. We recently saw a 3D printed foldable knife on Thingiverse -- this piece is intended to be 3D printed in plastic mostly to be a cool conversation piece and/or letter opener. Alex Young, the designer, wanted to "nerd out" about the capabilities of 3D design and printing with his friends and coworkers, and notes that a ballpoint pen is more weaponized than this design. Created first on graph paper, then rendered in SolidWorks, the knife can be downloaded so you can create your own at home. Check out more: http://3dprint.com/30164/3d-printed-knife/ ‎


Below is a photo of Young's 3D printed foldable knife: