Reddit reviews EURO TOOL Handy Flux, 1/2 Pound Jar | SOL-950.03
We found 1 Reddit comments about EURO TOOL Handy Flux, 1/2 Pound Jar | SOL-950.03. Here are the top ones, ranked by their Reddit score.
Great for soldering and picklingProtects parts up to 1600 degrees FahrenheitBegins to melt and dissolve oxides at 600 degrees FahrenheitCan be cleaned up with hot water1/2 pound jar
I doubt the pencil torch puts out enough heat to solder a heavy ring. I regularly use this for smaller items without too much trouble, sometimes using a pair of them if I need the extra heat. This one is even better in terms of output but again I've used two simultaneously on occasion.
Copper is filthy and really sucks up the heat--you might want to switch to a paste flux like Handy Flux to eat up the oxides that are keeping your solder from flowing.
Your soldering surface is important--you'll have less trouble with something heat-reflective like a Solderite pad or a charcoal block.