Retractable Pen (Fully-functional)
thingiverse
It's just a simple retractable pen that works. You need a spring and an ink refill but the refill is the thicker type you find in larger retractable pens (see images above), not the smaller type you find in cheap capped pens. The button piece is somewhat prone to breaking so any help on creating a more durable button piece is greatly appreciated. Remixes are welcome!
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