I have basted dozens of quilts using Elmer's School Glue and a carpenter's glue roller. I've used this method with wool, polyester, and cotton battings. In the past I had tried spraying, drizzling the glue, and even dabbing with a small paint brush, but was sometimes left with globs of glue in spots. Since switching to the carpenter's glue roller, I don't have globs of glue built up and I never have creases or folds in any of my basted quilts.