>>1837989>>1837995You have this strange idea of how titanium is welded. A few of your details match reality, but most are fantastic.
>that's the place that didn't fit inside the argon tankYou can get soft enclosures, cabinets, etc, but every Ti bike I've seen was built using a backpurge system & big cup on the torch.
>1 minute to do all the weldsNo, take as long as you care, start & stop, etc. But you have to flood the thing with shield gas a bit before, all during, and a bit after you run the torch, and that gas isn't free. And the longer you take, there are more opportunities for your surface prep to be ruined/contaminated.
>turn it around and you'd burn your hands doing itThis is why the frame is held in a stand or fixture.
Pic shows: inert gas hood/soft enclosure, ti frame w/ large backpurge fittings (in a stand), baby fittings for flatmount disc, frame fixture with integrated backpurge lines, a bottom bracket heatsink/purge fitting.
