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Yeah, I look pretty chilled here! I think that's why this picture was taken.
Erm....this is just how I do it! As long as you control the temperature and don't overheat anything, it's cool. The flux should be a nice grey colour after with no (or minimal) black bits (burnt flux). Takes practice to get the brass to penetrate nicely without cooking the joint.
I use oxy-acetylene and didn't really get along with oxy-propane. A lot of very good builders use propane though and it's a lot cheaper and easier to get than acetylene!
A rather relaxed pose!
Is it common to be so far from the workpiece?
I've only done MIG, but you're right on top of it there.