I have a gallon jug of school glue I bought a few years ago with the idea of my son and some friends making goop. I am going to have to try this. I am stunned by the price of the spray basting material. On another forum someone mentioned purchasing Elmers spray glue, but this is way cheaper way to go.
Sharon Schamber uses Elmers School Glue for basting her bindings, it works great. I iron it to dry it.