If you have a young helper in your sewing room the Sidewinder is worth it's weight in gold. LOL. My DGD would run to the packages of empty bobbins to buy just to wind them on the Sidewinder. The summer she stayed with me most of the time, I had lots of filled bobbins. I took them to guild so everyone could have different color appliqué thread. I bought the round bobbin donuts and filled them different color filled bobbins and we sold everyone of them at our fundraiser.