This video is a demonstration of a 3D printed wrist mounted crossbow I designed a while back. The crossbow was designed to shoot old pen cartridges from Pilot G2 and FRIXION pens. I made it for fun and never intended to publish it but when I finished prototyping I was convinced it was worth sharing. The STL files are available on my Thingiverse page linked here.
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I hope you all enjoy and please be responsible. Assembly instructions and a hardware list are available on the ReadMe file in the download.