I use 5 min, two part,
I use 5 min, two part, Devcon Epoxy. It is a bit brittle – so if the piece gets dropped from a height the bail may pop off. But, I’ve found it more secure than the E6000.
As for grinding the bails – make sure you don’t do this where you will be working on glass. The flecks of silver will leave mysterious brown spots on French Vanilla.