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 Why has my golf iron head broken off?In running a busy golf club making workshop you see all types of broken and damaged golf clubs in for repair. Amongst the most common is the iron head that has simply broken off the shaft during play, through no apparent reason. It doesn’t matter if the shaft is graphite or steel. Golfers find it very annoying to suddenly find that the head has broken away, right at the point were the shaft goes into the head. Sometimes it can be put down to damage caused from an earlier time. For example if you practice a lot at the driving range it is quite easy to catch the edge of the mat with a real thump and weaken the head / shaft area. Or maybe hit a tree branch on the follow through, not enough to snap off the head right there and then, but enough to cause the head to come away later after another “heavy impact” shot. But the most common cause I have seen is down to poor assembly at the time of manufacture. As you will see from the photo of this recently damage iron head the whole of the steel shaft inside the hosel has been filled with glue, far too much glue. Instead of the shaft being hollow inside the head with a minimum of glue down at the very tip of the shaft, deep inside the iron head, it has been over zealously filled so that the glue reaches up level with the top of the head.
Once hardened, the glue forms a solid core (above). Then, the shafts only flex point at impact is above the glue line. So after a period of time the shaft becomes weaker here and simply breaks off just above the solid glue core.
In this particular iron head the second photo (above) shows the hollow inside after the glue has been drilled out, which is how it should have looked when the shaft was first fitted. And how it will look after the new shaft has been fitted in my workshop. So don’t always blame yourself if your iron head breaks off it might well be a manufacturing mistake.
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