Go to YouTube and search for "glue basting a quilt". The 2 part tutorial by Slightly Off Quilter shows how to water down Elmer's School Glue and use an atomizer to spray the batting. It's works well and you don't end up with blobs of glue and the layers will stay together for a long time. I have one I glue basted a month ago and haven't gotten around to quilting and it's fine. Don't like the other sprays because of the fumes and Elmer's is cheap, odorless and safe!! Try it.