how does the plastic rings on festival bracelets/bands work?

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Like, why does it let you tighten it but not loosen it. I am very confused

In: Engineering

2 Answers

Anonymous 0 Comments

The actual mechanism is a ring of pins that are angled to poke into the fabric. Tightening works because the pins drag along the fabric while trying to pull the other way the pins dig into the fabric

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