Are bubble top cracks common?


I made my own stick awhile ago and I am using a Seimitsu Bubble Top. Today I just noticed what looks like a crack or somewhat of an ‘air bubble’ inside the ball top. Is this a common occurrence? Is there any way to fix it? I’ve never dropped the stick or anything, I just realized it as I started playing earlier today. If a picture would be more helpful, I’ll throw one in, I just didn’t think it was necessary.


I noticed the same thing on a couple of bubble tops I had aswell. I do remember dropping them on a hard surface and that is probably what caused the fracture in the balltop. I’m assuming it must be something to do with the density of the bubble balltops compared to the solid colour ones. The bubbles must make it easier to crack. Just a guess…