I tried a "paint scraper" on my last build but went back to the "bondo squeegee". I buy the cheap 10 pack of 4 inch wide bondo squeegees and cut them to 1 3/4 inch widths. I think a painting knife is stiffer than a paint scraper?? Like Jim said I also put some force onto the squeegee pushing the glue into the lams,then go over again and build some depth to the glue,excess glue will squeeze out under the hose pressure. I have held some of Jims bows and they are finely crafted.