Nerfdart Blowgun
thingiverse
I builded this blowgun out of a copper pipe with an outer diameter of 15mm and a inner diameter of 13mm. The 3D printed parts have holes with exactly 15mm(in the stl), so you may have to heat the parts up and stuck them on the pipe when they are deformable. The shootrange of my blowgun is over 30m!
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