The Inner Workings of the Brother card reader

How does the card reader work on a Brother knitting machine? We cannot see it from the outside so here is a rare look from the inside. Jack shows you what is going on. Visit our new website full of machine knitting help. https://free-4988452.webadorsite.com/ Shop in my Ravelry store for machine knitting patterns https://www.ravelry.com/stores/kathry...