I recently came across this video on YouTube, in which the guy is soldering a .5 mm QFP component.
As I haven't done a lot of soldering in my life (and never used flux), I have a few questions.
The guy in the video uses only flux without solder to do all of the soldering. How is this possible? What kind of flux is he using? As far as I know, flux is only used as a cleaning chemical during the soldering process. Correct me if I'm wrong.
He puts flux over the PCB traces and the space between them. If the flux is conductive, how is it possible that there are no short circuits created?