I have just basted a lap size quilt with Elmers School Glue. I didn't use the iron. I squeezed out a thin squiggly line on sections and laid the batting on it. Then when it dried, flipped it over and did the top by squeezing the glue onto the batting. I am very pleased with this method. The top especially is very smooth. I'm not sure about the backing but that would be blamed on my technique. So far I am quilting through the glue with no issues.