I've seen a few other blowers mention similar issues with hand and wrist pain. It makes sense when you think about how we hold heavy tools for hours. I remember one time my fingers went numb from gripping too tight, and I had to stop working. Maybe we need to take more breaks or do some hand stretches. What do you all do to keep your hands in good shape? It seems like a common problem that doesn't get talked about enough.
I was in a rush and didn't let my glass warm up properly before working it. The stress cracks showed up later, so now I always take the time to pre-heat, no matter what.