The stand alone bobbin winder that I purchased is from
www.fancyquilt.com is called a K-Kraft Super WInder. It is a great machine and I wind all my bobbins on it. It will wind featherweight bobbins, regular sewing machine bobbins and size M bobbins for our longarms. It is one of my best purchases and it's made by the owner of FancyQuilt right here in the USA!