I wind several bobbins when I get ready to FMQ. When I am done I always have 1-4 I didn't need. Every time I start piecing I start using them up. I have a lot as both of my straight stitch only machines use the same ones. My Daughter has a Brother 1500 that uses the same too. Her machine came with 100 bobbins she gave me about 10. I now have a good supply.