Isopropyl alcohol works well and I prefer brands containing 99%. I use cotton swabs soaked in alcohol to clean around pads. The wet end does the cleaning and then I use the dry end to wipe up the residue. A toothpick works well to remove any leftover swab fibers.
Tony
Also, as I understand it, simple rubbing alcohol suffices as flux-cleaner, so it's not a big deal. I've been using alcohol-wipe pads I had on hand (being careful not to leave behind fibers from the pad), which I'm sure is not ideal, but seems to clean the board up pretty well.
/m
On Sat, Sep 21, 2024, at 10:28, Tony Scaminaci wrote:
It’s not absolutely?necessary to remove flux but I be always do for two reasons. First, long term, flux could affect the performance of high-impedance points, most notably at RF frequencies. Second, it makes looking for solder bridges, shorts, and cold solder points much easier.
Tony AC9QY
I am going to start building a QMX+. I was wondering if removing flux with a chemical is necessary?? In all the builds I have done before I never bothered to try to remove the flux after finishing. Is it necessary?? I am using good Kester 63/37 solder with flux.
