I was hanging out with a guy last night who does very high end tubing fabrication -- not bicycles, but tubing assemblies for things like torpedoes and flight deck arresting gear. He's also a master welder -- another person there told me that he had seen the guy tig weld beer can material together.

Anyway, we were discussing my first frame, and he asked me what type of torch I was using...I told him Oxy-Acetylene. He asked me why I wasn't using Ait-Acetylene, mentioning that O-A gets really hot, and the A-A torch actually makes it easier to silver braze because the temperature is lower.

Is this true? As I begin shopping around for my first torch, should I be looking at Air-Acetylene rigs? Does A-A get hot enough to do brass brazing if I needed to do so?

Thanks

Pete