they get lost and they tend to hold onto bits of solder. I actually prefer to use a paper towel instead. Either way, wet it down and give it a squeeze so it’s not sopping wet. If it dries out ...
which depends on a little prep work to end up only slightly more complex than soldering to copper. A typical way to make a reliable electrical connection to aluminum is to use a screw and a wire ...
While many of us know how to solder, the book-learned folks yearning to actually build something, along with emerging hobbyists and budding engineers of all ages, could use some soldering tips ...