I have just finished 80x80 qayg quilt. 300 pieces - 100 front, 100 batting, and 100 backing. I used elmers glue (stick and bottle) to keep all sandwitches together while I quilted them. I used individual blocks to practice fmq so it was important for me that pieces for the sandwich do not move. It was amazing how well it worked. It washed out with not problems what so ever. My glue sticks were purple and my backing is off white, and I guarantee you it all got washed out. I used liquid Elmers after I ran out of glue sticks. I heard that Elmers works so well because it is really not glue but starch. I love it. I am planning to baste a large quilt with it as soon as i get enough time to actually do that.