One of my posts went mini-viral with my 'how a bobbin works' -- so many people are interested in the mechanics of things, myself included! (note -- that is my old blog and comments are turned off. Post here to tell me what's wrong with that .gif ;)
So here is a fun .gif of how a zipper works. Or how a zipper SHOULD work. Because with three daughters and a goofy dog, more often than not these don't line up for me ;)
By the way --
I'm looking for a photo or drawing of an 'exploded' sewing machine. Sort of like this but cuter, maybe hand drawn. Any takers? I have some fun Material Mama swag to entice you! Think VERY hard to find fabrics, patterns, notions, etc in a purty box from Cali-for-ni-a :)