I used a decorative thread to quilt a sweatshirt jacket that was thick like jeans thread. It came out gorgeous. I ran it thru the bobbin. I have also used it a little bit to quilt with it running thru the top, use a bigger needle. I think I used a jeans needle. You will have to fool around with adjusting your thread tension. Try it on a sample quilt sandwich and see what happens. Good luck.