Weller WSW SCN M1 (T0051404799) Solder Wire, Dia: 0.5 mm / 0.020 in, Wt: 100 g / 3.527 oz, Alloy Sn99.3Cu0.6Ni0.05, Flux content 3.5%

Th solder is excellent! The best around! Very fine for precise applications

I build guitar pedals with this solder. It's perfect and I love it.

did what it was supposed to do.

excellent price-quality ratio

Finally, a good lead-free solder wire for making daily soldering job much easier. This solder can be effortlessly applied between the PCB copper & component. Except, the price is x2 higher than the leaded solder wire. I really like to use it.

It's a little harder to use than lead solder, but with enough heat and flux the joints look just like lead solder. Really enjoy using this. Plus it's lead free so RoHS compliant!

had to use a lot of inches to get good adhesion. by the time i got it to stick the connector was melted

I tried the 0.5mm, which is about as thin as I'd go before it starts getting annoying. This is great for doing fine delicate work, but requires a lot of feeding when doing anything more than that.The biggest selling point of this is the 3% silver that's going with the 96.5% tin and 0.5% copper. This is an ideal solder for making hard strong joints that last the test of time.Weller's L0 is still the toughest, but this M1 solder is easier to work with and makes better looking joints. For everyday work that you still want to last 20 years, this is the best solder on the market.This is a fairly large spool that won't run out anytime soon. The 0.5mm size is definitely on the tiny size, so if you want one solder for doing a lot of general work, I'd probably go with the 0.8. For something that can literally handle any project with room for error, this 0.5 is a good way to go.Overall great solder.Highly recommended.