Think of yourlungs and your eyes - you will want to be using them
for a long, long time.
You know, I keep seeing this claim when acetylene is mentioned, and
I just can’t stay quiet about it any longer.
I regularly use a Little Torch with a nice portable Oxy-Acetylene
tank set up. I have use Propane, Oxy-Propane and (Ugh) Oxy-MAAP gas
in the past.
Oxy-Acetylene is NOT brighter than propane.
In fact, I’ve found the opposite to be true. Not only do I have a
LOT more problems with “spots” in my vision from the same size of
propane flame, I generally need only a TINY (6 to 8mm long at the
core) flame when I work with Oxy-Acetylene to do the job for
everything but annealing, while a much larger propane flame is
needed, takes longer to do the same work, and generally leaves a lot
more oxides on my work.
That said, I DON’T recommend Acetylene on it’s own. It’s a mess, and
I can’t suggest the Smith Little Torch enough. It’s a wonderful
little piece of equipment that no one who is soldering more than
casually should do without. No affiliation, just a VERY satisfied
Dreaming Dragon Designs