Quote:
Originally Posted by Daox
Does map gas alone not get hot enough to braze for HVAC?
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Funny you should mention that.
A few years ago, this guy I knew (who I must emphasize IS NOT ME) got into home distilling. Now this means a lot of copper: a large-diameter, packed column for the vapor, and a smaller, jacketed one for the condensed goodies.
For strength, he thought "silver solder/brazing" was the way to go. Using *just one* H-D mapp canister was unworkable on Cu of over 1/2" I.D. What DID work was duct-taping TWO bottles together, such that the flames pointed at the same general location. This could heat copper up to 2" I.D. to brazing temp, and probably could work on much bigger pieces.