Chortle!
Very slight thread drift: reference has been made to epoxy adhesives and to Loctite Retainer.
Retainer/Retaining Solution is for holding pins into holes, gear wheels onto shafts etc.. It works in close fitting cylindrical pieces by crystallizing, effectively forming thousands of mechanical pins which grow into either face and make an incredibly strong union. Not well known, but amazing stuff. I use 603 for general purpose, but other viscosities are available.
Araldite, Aerolite, Redux and various others were developed at Norman de Bruyn's labs at Duxford, and many of the glues, paints and modeling putty we use nowadays are thanks to this unsung hero, who should be MUCH better known for his contribution to the modern world.
It is my understanding that R E Bishop' design team intended for the Comet's windows to be Reduxed (an epoxy + high temperature and pressure process) but de H management could not bring themselves to trust this new-fangled process fully, and insisted on adding rivet plates and rivets....belt and braces.
Sadly it was the riveted reinforcements that led to pressure concentrations and the eventual fatigue and failures.
The beautiful Sud Aviation Caravelle had rounded triangular windows and the L1011 had rounded rectangular ones very much like the Mk 1 Comet, but purely bonded into place.