I have used invisible thread on more than one queen-sized quilt. You have to watch the tension and the pre-tension. If your machine has the multiple holes at the top for the thread to pass through (Pre-tension), use only 1 hole for invisible thread. Using more than 1 hole will cause stretching and possible breakage of the invisible thread. It also needs to be used with an upright spool holder, so the thread can unwind. If used with a sideways spool holder, the invisible thread will twist and cause knotting.