Having a large space at the right height and washable glue have been a lifesaver for me in sandwiching. I put the glue on the batting and then smooth the backing over that. Once that is dried I flip it over and repeat the process with the front. By putting the glue on the batting I don't have to worry about some leaking through the fabric on my table. I also put a small amount of water in the bottle to make it flow easier and hold the bottle up high so it is a thin stream by the time it gets to the quilt bat. It's still not my favorite part but a whole lot more tolerable with this method. Before this I pinned.