By the way, working with steel and solder is sooo cool, way easier than cutting aluminum with an alternate saw and filing the hell ou of it.
You just use sheet metal scissors to cut approximate shape, rectify on the bench grinder, file the edges, fold the piece using the bench vise if you need to.
Then for assembly, instead of drilling, and trying to mate approximately drilled holes, you prep for solder, flux, find a way to hold them together while yousolder them. It is very cool and pretty easy actually once you get used to it a bit.
Also for added scale look: I realized the parts started rusting after a couple of days lol
I wonder if brazing is much different/more complicated?