Thank you community of builders!
I bought "new" soldering supplies (63/37 solder paste and No Clean flux paste both in syringes) to teach myself to solder surface mount devices-- it, and I, did well on a couple of the SMD practice boards. All the test points measured correctly and all the lights blinked as they should-- success! I did 1206, 0805, 0603, and 0402 size components all successfully. So when I started on the QMX+ I thought I'd try these "new" products-- gunky stubborn flux!?
I dug out some old rolls and found one each of; KESTER 63/37 flux 285 .020 dia. & KESTER 60/40 flux 44 .031 dia.
I think I'll proceed with the '285' and keep using cotton swabs (Q-tips!) and 91%ISA. Again I appreciate very much the community of experts and experimenters we have here together.?
'73 Robert AD6XJ
