
Glow knife
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I wanted a glowing bladed knife for a sci-fi cosplay costume, so I designed this one. I chose the handle from Herman Lundgren's Bayonet (CS:GO Knife) because it had the right military sci-fi look. It is designed to fit the common 20.5cm by 0.5cm glow sticks, which I get in packs of 50 for a few dollars. These glow sticks are used to make necklaces and bracelets and just slip into the hole in the base and press into the socket at the tip. They fit closely enough that they don't move about, but if needed you could wrap a bit of sticky tape around the end of the glowstick and it should hold it in place quite securely. The plastic doesn't transmit as much light as I would like, but if you put the glowstick in boiling water before breaking it, they can be very bright. This is a prop; it doesn't have an edge, and will likely break if you tried to stab someone. I printed this upright with a 30 line brim in PLA at 205 degree nozzle and 55 degree bed on my Wombot XL, with no rafts or supports, using 0.05mm layers and 20% infill, printing it at 100% scale.
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