I started woodworking as hobby a few years ago, and used some epoxy here and there to fill voids in wood. But after having epoxy on hand all the time, I realized just how absurdly useful it is for fixing little things around the house. Our microwave handle barb broke off. Epoxy it back on. Dropped a potted plant and the pot broke. Epoxy it back together. Etc.

There are super ergonomic and foolproof products that I feel like everyone should have around in that one kitchen drawer that accumulates all the miscellaneous stuff: https://www.jbweld.com/product/j-b-weld-syringe

Two part epoxy is duct tape for adults. I patched a cracked tub basin with marine grade and embedded fiberglass -- lasted 6 years (so far).

I ripped the front edge off one of my snowboards by riding into a tree - paid $20 for a shop repair that ripped off again in a day - glued it back with marine epoxy when I got home from that trip, and it's been good for another ~40 days of hard riding so far.

Agreed. The brass part is obviously higher quality, but I also wonder if it was intentionally plastic so that it would breakaway instead of damaging the battery in an event like this. If that was a design decision (not a cost decision), it would actually be a better idea to stick with the jb weld plastic part than go with brass.

It was intentionally plastic in that they were designing a molded part and chose to not have the nipples a separate part, but molded them in to save on the expense of designing and assembling a separate part.

Tesla really loves to integrate parts together - look up the "superbottle" for a previous example.

Yep I had a plastic barb break off my coolant reservoir tank. I reamed it out with a twist drill, used epoxy to glue in a new barb I got at the hardware store, and it's been good since then (over 2 years now).

Yeah, that's what I'd call a hack. It would work, but it's kinda iffy compared to what they did :D