Join Date: Aug 2005
Location: San Francisco California
Bikes: Waterford 953 RS-22
Mentioned: 12 Post(s)
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Quoted: 194 Post(s)
The flux is soaked off after the frame is brazed, so hopefully there's no flux remaining on a finished frame.
You can reheat a brazed joint to separate it, but for a brazed joint using brass filler, the reheat temperature required will be greater than the heat required to do the initial brazing. Depending on whether brass filler or silver filler was initially used (brass filler melts at a higher temperature) the heat required to melt the filler so the joint can be separated may overheat the tubing, weakening or distorting it.