I love Elmer's Washable Glue. I do dilute with a bit of water and I use tips that I bought online that provide a narrower stream of glue. I do the "wave" bit on all layers and if I do get a glob of glue, I use a foam brush to smooth the glue out. Since I use a poly batting, ironing the sandwich would flatten the loft. I just let the sandwich dry on my dining room table. This works well for me since I am now at a point where I just make baby quilts for charity purposes.