I've never had a problem with blobs, even using the Elmer's School Glue straight from the bottle. I adjust the nozzle for a fine line, then quickly move it back and forth, across the fabric. If a bit too much glue comes out, I smear it a bit, with the side of the nozzle. My machine has never had a problem with it . . . but I do the sandwich quilting on my DSM and never go very fast.