Blind Stitch sewing machine, how they work?

Tutorial: how to sew a blind hem with the BERNINA Blindstitch foot number 5

Invisible Hem: How to Sew a Blind Stitch Hem by Machine | The Daily Sew

How to talk to a blind person you’ve never met… 👀🦯👋🏻

What I'd like to see if I could see

Can the sighted people please STOP! 😅

How To: Sew a Blind Hem Stitch

How to Sew a Blind Hem by Hand - EASY!

How to Hand Sew the Blind Hem Stitch (Slip Stitch)