I've been using no clean flux on my QMX+ and using 91% isopropyl UNSUCCESSFULLY. A friend recommended a product called "flux off" but it costs $30 a can (too much for me). I don't remember my old solder leaving so much gunk behind ?. I do have an ultra-sonic tank I'm willing to try, but I do agree fully that the point-by-point cleaning process is also a good inspection opportunity. The cotton swabs do annoyingly leave a lot of fibers, maybe I need nippers that don't cause burrs??? So I am still looking for a solution (pardon the pun) to get rid of this flux.
?
?
