Midwest Golf

Whether all metal or a mix of metal and composites, modern drivers are most often three or four pieces of material welded or epoxied into one. When assembled, the heads are usually loaded with what’s called “mouse glue” or “rat glue.” Four to six grams of it sits like a lake on the sole of the inside of the clubhead, and it serves a few purposes. First, it is used to change the tone of the head at impact. Second, it helps bring the clubhead up to a desired weight. Finally, it is supposed to catch any weld beads that come loose. When one or more of those weld beads slips by, you get a rattle inside the clubhead that drives many golfers crazy.

However, rattles can also be the result of a hosel bore plug pushed into the head or of debris falling into the clubhead when a clubmaker drills out a broken graphite shaft. To alleviate a rattle, there are few things you can do. You can heat the head to allow any already-installed mouse glue to catch the weld bead. Another possibility is to inject another type of glue called Rattle Stopper, and there are two methods for doing it ...