Hi
I could not find a forum about "working techniques", but this one qualifies a a failure I guess.
Trying to braze for the first time (actually second time with same results). On youtube it looks so easy and the solder flows so easy. (see Keith Appleton)
I am using Safety-Silv 45 and Otay H-20 flux (and a MAPP torch). I am suspecting that these don't like each other but cannot find any documentation.
What happens is that the flux starts to get fluidy as it should but the rod will not melt yet. Then brown. At the point when the solder starts to get soft, the flux seems to get int a charcoal state and the solder never really starts to flow and get sucked in by capillary effects as all the instructions claim.
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Metal has been perfectly cleaned
Tried steel, then brass, same effect ( see picture).