Something I've always wondered about....

We all use Epoxy glue in one part of our building. Have we ever stopped to think how it works?

You get two bottles, an epoxy and a hardener. Measuered out in equal quantities, and mixed, what makes it gel then harden? What sets the 'cure time' Is it the hardener reacting with the epoxy?

Can you substitue 5 minute epoxy with 15 minute hardener? (I know you're not supposed to, but what if...)

something to make you think...