Originally Posted by madamekelly
I believe I may know why this is happening. If your thread, cotton right? is breaking mid-seam, you may have left the cotton in a sunny place long enough to degrade the cotton in the sun. Sounds strange, but I had to get rid of a bunch years ago for doing the same thing. The side that faces the sun, is weakened by the sun's rays and creates a weakness every so many inches, viola! breaking threads every so often. Do not give the thread away or you are passing the problem on to another. Where are those quiltzillas when we have 'gifts' for them.... :thumbup:
I think this lady is on the right track. Even without the sun, thread can dry out. I put any thread that breaks too easily into the freezer. Leave for a couple of days then put somewhere to defrost. It may not work for poly/cotton but I've had no problem with 100% cotton.
I have some embroidery thread in the freezer at the moment but am not sure if it will help. If not into the bin.