ktbb

serger/overlock threads are not as strong as regular threads, which may be part of the reason you're getting fraying/breakage. I know that may will use it for quilting/piecing, but it's not something I use because of the difference in strength. In addition, it's not only the size of the needle that makes a difference , it's also the size of the eye and the scarf on the needle. Several professional quilters report that they use only a topstitch needle for all parts of quilting - a topstitch needle has a slightly larger eye and scarf and the eye isi more rounded than a other needles, which means less stress on the threads.