This stuff works great, I can't imagine brazing aluminum is that easy! I use it to solder RG 6 to PL259. RG6 uses aluminum foil around the center insulator and this solder slightly wets it. A word of advice: this solder doesn't seem to like regular electronic solder. When I tried to wet the aluminum with it and then filled it with regular solder it stopped connecting properly. So now I just use a lot more paste, but I get a great solder joint! Didn't think it was possible!