Be aware that epoxies are not timeless.
For best results their shelf life is months to about a year.
I get aviation epoxy given to me by an A&P mechanic.
I use it for anything at all if it's just out of date, you know they
build a safety margin. But I wouldn't want to use it for something
important if it was way old.
Doing a good bedding job is too much hassle, combined with the
what it's if it fails later, to save a few bucks on old products.
JMO
