Homemade Bobbin Winder While making an electric ice fishing reel, my family asked me to fix their broken sewing machine bobbin winder, so I got the idea and made this. * 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 main body, lightly touch it with your finger, and lightly press the button to wind the thread. As you get used to it, you can press the button harder and wind the thread quickly and easily. ☆ Uses AAA batteries, which are easy to replace. * Made with care, but may have minor scratches. * I use packaging materials I have at home, so please understand.