This brings up a question I have had for a long time. Maybe the Polymer
Chemist that posts here occasionally (sorry, forgot the name) could
explain.

Why is there such a difference in viscosity between various brands of
epoxy. I don't mean the penetrating stuff, just the regular resins we
use for gluing and laminating. If epoxy is almost 100% solids, what is
different in the formulations that give such a difference or is it a
difference in how the base resins are made that the formulator uses for
their individual products.

Regards, Ron