Ours was for an obscure skill that was still listed on the union's books.I did a 6 night community night course a few years ago at the local high school, we met one a week. After week one, we mostly welded practice lines then pubs. After week 4 it was pubs first, then welding.
I can weld body metal as well as anyone I’ve met at a body shop, weld anything on a bike, and cut with a plasma torch like a chef.
it’s not rocket science.
Welding ceiling rods onto the deck.
Never did it or saw anyone else do it.
If you messed up a ceiling could collapse on the occupants.