Originally Posted by
gale
I've been saying that for years but a lot of people actually believe the shells sharpen your pins. I have no idea how that is even physically possible.
I don't believe it is. Like running a diaper pin through our hair (back in the day) when changing diapers, it didn't sharpen the pin, it simply lubricated the tip of the pin with the natural oils from our hair helping the pins slide through the fabric easier.