70 years ago my father at paccar used gallons of epoxy in his M55 design and follow on contracts for the M107 and M110 mobile artillery.
It is in the pendulum of the equilibrator to position Mercury switches that turn on hydraulic valves to balance the 20 ton barrel from swinging down hill and balance barrel elevation.
At Boeing a tooling machinist can walk into the epoxy shop and be handed a cup full of just mixed Devcon.
In my humble shop where I build myself 3 or 4 rifles a year, I can mix epoxy as fast as some people can mix a drink.
