It is also useful for exact placement in sewing or embroidery. (For stitching projects, some people loop thread through the hole to help anchor the pin better.) Not the original plan, but we love a good multitasker.
Fun Fact: The Safety Pin Was a Happy Accident (Sort Of)
The safety pin as an object dates back to 1849; it was invented in 1849 by Walter Hunt. He literally made it in three hours to pay off a $15 debt. Yes, really. He even patented it — but then sold the patent rights for $400. Safe to say he may have second-guessed that one once the thing blew up.
What’s wild is that Hunt didn’t even think that this little hole in the coil would become a curious phenomenon more than 150 years later. But here we are.
The Best Kind of Everyday Engineering
To be honest, safety pins are an incredible functional design turn. They’re inexpensive, straightforward and somehow batshit useful. From fashion fixes and first aid to D.I.Y. projects and diaper duty (hello, vintage cloth diapers), they’ve weathered the test of time. And that’s in part thanks to the sort of small design details like those in a hole in a safety pin. It’s one of those “you don’t see it until you really see it” type of things.
