Homemade Bobbin Winder While making an electric ice fishing reel, my family asked me to fix the bobbin winder on their sewing machine, which had broken. I got the idea from that. * Easy and fast winding. * Can be used on a surface or held in your hand. * Doesn't take up much space. * Initially, insert the bobbin into the tip of the main unit, lightly touch it with your finger, and lightly press the button to wind the thread. As you get used to it, you'll be able to wind the thread quickly and easily even by pressing the button firmly. ☆ Easy to replace with AAA batteries. * Made with care, but there may be minor scratches. * Please note that I use materials I have at home for packaging.