Review on SRA Rosin Paste Flux 135: Unbeatable Flux for Optimal Soldering Performance by Kenneth Broszko

I'm a software developer which basically means I can't solder but sometimes I try. I was taking my first prototype board for a project and a colleague recommended using flux. That's magic. Solder flowed onto the leads and pads. No more nasty solder balls. The solder is waxy and I applied it sparingly with a toothpick or dipped the wires.