Practice
I’ve got a mangled crosscheck frame sitting in the basement that I’m planning on turning into a cycle truck, I’ve got a bicycle kit in my office that I’m going to turn into a(nother) rando bicycle, and I’m planning on putting canti posts onto the midlifecrisismobile, so before I do any of that I need to do some practice brazing larger chunks of steel.
Like, say, canti posts.
My big torch needs a new tank of oxygen, so I didn’t use it. No, I used my hardware store bernzomatic torch, which may not be the best tool for the job because it takes a long time to push enough heat into the casting to melt the brass onto it. But that’s not the horrible thing about this bit of brazing; the HUGE PILE of brass makes up in badness for anything else I might have misdone here.