Actually collodion and Acetone used to be used. Modern"white" glues would trash the optics and probably the records, too. First Contact has four polymers in it, eliminating the shearing failure mode when the collodion is too thin.
Considering bulk collodion would run you afoul of the anti-terrorist weenies, this is a good deal. I have not been following the thread, am I too late to pay?
Steve
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...