Tell us about yourself!
I had tried this method of gluing the aluminum to the black button and found it fails too often. I resolved this by slicing the black part off and scavenge a good one from another device (not in use but black buds were new and had that waffle texture) slice that off and using a whole punch that matched the diameter of the original one. After making sure all sizes match it cemented the new piece with a dab of RTV. Then after letting that set it works like new.