Just FYI ..... I put a pool of Elmer's glue on a piece of tinfoil and then dip head a of a flat head nail into the glue and dot it along one half of the material pieces that I am putting together - and then use my iron to seal. This is a lot less messy and a lot less expensive than buying tips for your glue bottles - and - I have a lot more control of how much glue goes on the fabric.