This sewing machine pierces the fabric thanks to its threaded needle, and with the rotation of the hook below, it catches the thread and wraps it around the spool, creating knots. In this way, it connects the pieces of fabric together. 👉 Subscribe to our tech newsletter, The Blueprint, which is your daily source of tech, science, and engineering innovation. Here you go: https://ie.social/V0ymX #engineering | Interesting Engineering