A few days ago, I heard an interesting little tip from an old racer while discussing the best way to put a riveted assembly together. In response to my concerns about high vibration loosening the fasteners, he said the answer was simply dipping the rivet shanks in epoxy prior to installation. While blind rivets are already a pain to remove (and this wouldn’t make life any easier), it does provide an excellent backup. No dead space means less fatigue, and the epoxy would provide secondary retention for the leftover stem.
A clever fabricator could probably combine this technique with strips of epoxy or RTV in an assembly’s seams to create a liquid-tight container without needing a welder. It’s a good way to improve reliability or sidestep the need for high-dollar equipment.
(Thanks to Flickr user Illetirres for this cool CC-licensed photo)