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The Range
NFA & Class III Discussion
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<blockquote data-quote="bettingpython" data-source="post: 1887593" data-attributes="member: 4307"><p>Just because mapp will get that hot doesn't mean you have enough volume going on to get the localized area hot enough, the rest of the barrel is acting as a heat sink and soaking up the energy before it rises to the level you need in the localized area. </p><p></p><p>A butane torch will hit 2600 farenheit but the little hobbyist models don't have enough volume to brass braze a radiator repair... I know.</p><p></p><p>I could silver solder AC joints when setting new compressors with a mapp torch when the Oxy/acetylene rig was out of gas, but it sure was slow and painful. That thick walled barrel is going to soak a lot more heat up than the copper tubing in an AC line set.</p></blockquote><p></p>
[QUOTE="bettingpython, post: 1887593, member: 4307"] Just because mapp will get that hot doesn't mean you have enough volume going on to get the localized area hot enough, the rest of the barrel is acting as a heat sink and soaking up the energy before it rises to the level you need in the localized area. A butane torch will hit 2600 farenheit but the little hobbyist models don't have enough volume to brass braze a radiator repair... I know. I could silver solder AC joints when setting new compressors with a mapp torch when the Oxy/acetylene rig was out of gas, but it sure was slow and painful. That thick walled barrel is going to soak a lot more heat up than the copper tubing in an AC line set. [/QUOTE]
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