What type of adhesive do you use for gluing gems on bowling balls?
For years I've used white 100% silicone to glue glass gems and other items on bowling balls. (For yard art like a gazing ball but it doesn't earl like glass gazing balls)
I like while silicone because it's flexible doesn't crack and because it's white the gem colors pop. But I hate the vinegar like smell when it's curing. I always grout the ball after it's cured about a week later. I'm hoping to find out what others like to use... and why.
If I understand your question correctly, maybe you could use hot glue?
What are you using these decorated bowling balls for. I have never heard of this. It might determine what would work best for adhesive.