why does it take long for my solder to melt?

October 21st, 2008 | Tags: ,
How do you Solder?
Dyoxfor asked:


[i am just a beginner but still want to learn.] i tried soldering some stranded copper wires, but the solder took a very long time [about a minute] to melt into the copper. I use a 30 W soldering iron and a 60/40 rosin core flux.

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