It doesnt want to wind the metal bobbins I use with my Juki 98QE but I did manage to get it work with the plastic ones I use in it so I guess I will be using plastic bobbins in my quilting machine. I wished I had one of these a long time ago. This is going to save me a ton too with my Brother PR-600 6 needle machine. Even though I get my NEB's wholesale I can still save a ton by getting bulk fill! I love it already and its sooooo portable, runs on batteries when needed to!