Maybe a bit late to 'pipe in' here, but...
I just read the original post in this thread, and can't stop laughing... bravo sir!
As a professionally-qualified English teacher in a university in Spain, may I congratulate you on your *mastery* of the English language. And Godspeed on your mastery of barrels, rivets, conveyors and springs!
Good luck and thank you for making me laugh so much