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Hi! Somehow I cannot send you a private message, so I'll just leavea comment. Do you happen to have an idea how to make a spring loaded knife ring, like this: https://s-media-cache-ak0.pinimg.com/736x/43/9d/3f/439d3f6e8d36d76f487db435933e3713.jpg ? It's real and functional, found in Berlin in 1932 - I wish I could have one... I would be very, very grateful for ny tips or instructions <3 Cheers!
How about the hidden blade from Assassin's Creed 3, Conner uses it as a knife as well as it's intended purpose.
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