I may have just received a bad spool, but the thread wasn't a long piece. Each time I started sewing I made about 6 inches and that was the end of the piece. I restarted my car and started again. After about the 6th time I pulled out the spool and started unwinding it. The thread continues to come loose in pieces. I threw away the spool. I bought another color of thread at the same time and this bobbin is fine.