sewing thread questions
I am a relatively new quilter and I bought several spools of thread...I've noticed that some are thicker and thinner than others....I have a Brother 9500 series machine and I've had trouble with some thread...so my question is.. how do i tell what size thread is...is there a chart somewhere...what thread is best for piecing a quilt...what thread is best for machine quilting...what thread is best for hand quilting???