I always use Elmer's glue sticks when I sandwich for rag quilts before I sew across the block. I just put an x from the glue stick on each piece of the material and then smooth the pieces out together with my hands, no heat setting. Washes out 100%, even the purple colored Elmer's glue sticks--I got a couple of them in pkgs I bought of multiples that were on sale with school supplies. Crayola also makes glue sticks, I have tried them also and they work as good as the Elmer's, they are a little cheaper but I have found that they do not seem to have ass much glue in the sticks.