I have been reading threads about the pros & cons of this method. I would like to try it on a small quilt. I bought Elmer's Washable, no run School Glue. Is this the right one? I just want to be sure before I begin. I know it is supposed to be School Glue, but now I am confusing myself - does washable mean it will wash out or an article is safe to wash and will stay glued together. Someone please set me straight - thanks !!