Air acetylene torch-Can you braze with one?

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I asked this question in another post, but I think it was off topic and the post was kinda dead. I've used this type of torch to silver braze in the past. When I was doing HVAC. Funny it was unpopular to do 25 years ago, worked fine for me and was 1/4 the cost of OA. Mine didn't get nearly as hot as the new ones today, but I could silver braze copper up to about 7/8. The modern air acetylene or turbo torch claimes temps of 2700. Has a striker built into the torch, and comes with a variety of quick change tips.  So for mild steel 3/16 or under, the fluxed rods melt at 1400 or so I think, and for those low temp, AL rods it should work as well, so that covers most of little handyman welding jobs. Seems to me that soft broad flame would get steel cherry red with no danger of melting? Anyone ever try, or is there a reason it should not be done? TimLincoln SP100 WeldpacLincoln SP 140 HD -Magnum Spool GunSent from my iPad using Tapatalk
Reply:For basic brazing I think it should work.
Reply:Yes, you can braze many things using an air-acetylene torch.The air-acetylene flame is usually broader and 'softer' with its heat application than the much more focused and concentrated flame from a typical oxy-acetylene welding tip.  If you went to a multi-flame oxy-fuel heating tip (aka rosebud), then you could get a broader heat application than the concentrated flame of a welding tip.http://www.harrisproductsgroup.com/e...zing-heat.aspxor the PDF version of it athttp://www.harrisproductsgroup.com/~..._author_rv.pdf  The best laid schemes ... Gang oft agley ...
Reply:It'll work, but the heat is a little low, even with a swirl tip.  What that means, is that it takes a long time to heat up, and you'll use a lot of extra fuel getting it hot enough.  You can actually reach brazing temperatures with a propane torch too.  That doesn't make it a good idea.The lower melting stuff (sil-phos) brazes well with this (which is why it is so popular a method for HVAC) if what you're brazing on isn't too big a heat sink.  Low fuming bronze, not as much fun.  It takes ages to get hot enough.  Nickel-silver, not at all.
Reply:Look-up Turbo Torch.  Hotter flame and brazing is no problem!!!!