That’s how we feel about sewing machines. Sure, there’s a motor. There’s a needle and some thread. But how does the machine make a stitch? We always wondered, but after watching a recent ...

So once upon a time, sewing machines didn’t just do a bunch ... decorative stitches and their cams built in. The 3-step zig-zag cam was just the beginning. [GYOC] decided to make a few more ...