Hello...I learned a good lesson from a very experienced quilter....She let me know sometimes the thread sometimes ages and starts to brittle a bit. his sometimes causes breakage. She brought out some stuff and dabbled a little on the spool length on the thread. I asked her what she was putting on the thread and she said silicone gel. (it also comes in a spray). She told me it brings old thread back to life and puts elasticity back in the thread and it would stop the breakage.....Sure nuf...Worked!!!!! I know have some...And have used it. I had some thread that gave me same issues and now...I can use it again.works like a champ. You can find it in any sewing machine shop. Haven't looked for it in Joanns, but did find it in a sewing machine shop.