I just got the new Deluxe Sidewinder. It works much better than the original one. I am now using it to wind all my Featherweight and Janome plastic bobbins. It was expensive but it does a great job and it includes spindles that you can change out to wind all kinds of bobbins, including ones for Gammil and Handi-quilter. The list of bobbins includes Viking groups 2,3,4 transparent and Viking green plastic bobbins also, among many others.