It’s disappointing, sure… I do cut them some slack though for not knowing how this particular adhesive would age. It sounds like it’s more a failure of someone providing them a component that isn’t up to par, rather than their design negligence. But yeah, it’s a bummer.
Researching this more online, I’ve come down to 3 options so far:
A) E6000 Industrial Adhesive - Searches for “best metal to glass adhesives” often mention this. This is fairly gel-like though, and I’m going to need to get creative to try and apply this in the gap without making the detachment worse as I do the repair. (My plan is tape off everything well, apply a bead of this glue along the edge of the gap, then run some string/line through the gap and use that to manipulate the “goo” around into the gap thoroughly. Then clamp it gently for 2-3 days)
B) Some sort of 2 part Epoxy like “Devcon 31345 2 Ton Clear Epoxy, 25 ml” that claims to give 2500PSI of strength (Same sort of application challenges)
C) Some thin CA type superglue like Loctite Professional. The benefit there is that it’s super thin, low viscosity, and should spread through the gap between the glass and metal very easily. Mask everything off well, apply it, then clamp it for a while.
Having moved to Mexico a while back, the idea of trying to ship this around for a repair is just a recipe for not having it again for 6 months. It was a royal pain in the butt to get it here in the first place.