May I ask why gluing is necessary? I fold mine over, no clips or pins, and just readjust, whether by hand or machine. I used to pin, but, it became hard to manage, always moving a pin. It went faster just folding over. I am not extremely coordinated. I think the ironing is to dry it. I had a hard time getting a pin through the glue with hand sewing. Not with machine sewing. works great. I glue baste my quilts. I don't iron, just let dry.