I have been going through hell with solder lately since Radio Shack closed. Never had trouble, just bought big spools and the solder pretty much always behaved the same. And by the same - for ME, is:
- Apply tinned / wet iron to a lead, soldering iron heat set at 300(c)
- Apply solder to the lead while iron held on the lead (20-gauge uninstalled wire on 2-sided protoboard)
- Solder turns into fluid, creates a wet structure around heated lead with convex arc radius around a lead similar to a meniscus
- Let go of solder, THEN iron, count MAYBE 1/2 or 1 SECOND... Solder turns from fluid wet glossy mercury, to matte/shine solid.
I do not want to get STUCK with ANOTHER big roll of useless expensive solder. So, I buy 2 different SAMPLES of "KESTER 44 solder" - 60/40 and 63/37. The "60/40" solder behaves weird - it will get hot, and not really turn into a fluid - (does not get wet around the pins). It just kind of becomes hot and acts like sticky play-dough. The "63/37" solder appears to work PERFECTLY so far, it does exactly how I described what I am used to using. I am very pleased with the "63/37" solder.
So my question is: does "KESTER 44 60/40" solder ALWAYS act like sticky play dough without getting wet? Or did I buy a bogus sample of that solder? Is there ANOTHER variation that I am over-looking when ordering solder?