Kester 24-6337-8800 50 Activated Rosin Cored Wire Solder Roll, 245 No-Clean, 63/37 Alloy, 0.031 Diameter

USA Quality

Lead and tin mixture that when heated flows over copper conductors like butter

This solder flows very well nice and clean.

Dont get the cheap stuff. This spool is very high quality and easier to use than the cheaper solders and the joints also come out shinier.

I know its not politically correct to say this but wow - what a relief to get back to a good tin-lead solder vs. the no-Pb stuff I struggled with. Just could not make it work with my controlled temp Weller station. I love this Kester alloy.

Used to upgrade some arcade stick parts, been holding well for a few months now, no connection issues. Thumbs up from me.

I dont like having dirty PCBs - I started out using Kester 44 which is super easy to use, fantastic solder. But it also leaves behind hard, yellow flux that is difficult to clean. This stuff though, is the opposite. It definitely requires getting used to, if you arent already used to such low-flex solders. But the end result will look better. There IS still residue on the PCB, but it is clear if you leave it on there, and very easy to clean with alcohol or contact cleaner

Just what I needed and on time

This solder is very easy to work with, but to make it No-Clean as advertised, they use much less flux than regular solder. What this means is after you apply the solder for the first time, the small amount of flux dissipates, and youre left with dry solder thats very stringy and hard to work with, and youll need to apply your own flux to work with it again. That said, as long as you dont need to fix anything, this is still a very nice solder to work with.

Best solder for racing drone applications