so we used to hate having to deal with lead-free solder but then
then
we discovered the joys of germanium-doped solder, also called SN100C
still a higher melting point than 63/37, at 227°C (compared to 183°C), but it flows and wets copper pretty much just as easily at 63/37, it's cheaper by far than silver solder, and joints are just as clean and shiny as 63/37, and it's truly eutectic
the alloy to look for is Sn₉₉.₃Cu₀.₇Ni₀.₀₅Ge₀.₀₀₉
-F
also ping @starkatt because I think she'd appreciate knowing this, and maybe also @Kyresti
-F