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

Use this daily as an audio professional!

Awesome product. I have worked with Kester my entire professional life as electromechanical engineer 35+ years and this company never lets me down. This is a new item I used and I love it the flow rate is so quick the components being soldered do not even have a chance to get to warm to handle at least for me. The joints look better than mechanical hot flow machines that mass produce pcbs and other items. Always a shiny well even flow no gaps the pads on the boards do not get hot to remove the glue so they stay in place. I soldered some really grody nasty joints on things today and the core worked great cleaning the area so solder flowed evenly and smoothly. Once again KESTER ou knocked it out of the park I will always buy this product and the company that I purchased it from well I had it the next day I think maybe day after I ordered it but that was awesomely quick KUDOS to you. You have my business from now on. I made on a personal level some SMD RGB 5050, 0603, 2835 LEDS to hook up wire 30 Gauge and this solder was the bomb the leds did not even get to warm to touch I took it out of the clip soon as I soldered the common wire flow rate is awesome on new products not to bad on rework either. GREAT JOB.....

Its fine. It does what good solder should do.

Kester is the best stuff out there I think. This is a nice messless solder.

Excellent solder. In my opinion, it’s better than the tried and true standard rosin. The activated rosin is a stronger flux, which allows to use a lot less in the core than standard rosin. So not only it works slightly better, but it leaves much less of a mess than standard rosin behind. You can hardly notice it. Truly no clean needed.

Melt fast and flows nicely, I have been wondering why some of my solder flow nicely and some dont, before I place my order for my re-supply, I looked at the spools and found out I have 60/40 and 63/37 solders, the 63/37 are the one the flow nicely. This is a little more expensive but worth the money to eliminate some soldering problems.

... and kind of amazed too. I mean, its 37% lead. About five ounces of lead per roll. That snaps off into little hanks that are just the right size for two and four legged friends to pick up and chew on. ROHS solder is a more sensible, safer option no doubt, but it just feels wrong to use Euro-weenie stuff on electronics made in an era when techs stuck the solder in their mouth for a third hand and made cheater plugs with alligator plugs, washed down with unfiltered Chesterfield breaks.

Good quality solder for basic electrical project work.

Does NOT flow well, like Kester rosin core solder does, unless your leads are pre-tinned or you use separate flux. Ill be tossing this now that Ive verified the OTHER Kester is the GOOD one:

I had never used 63/37 solder before. I always bought normal brand 60/40 rolls. This solder takes me to a whole new level. It melts at a lower temperature. It is very thin and thus more suited to the precise joining jobs that new electronics require. I had to practice before I could reliably control this thin stuff, but my effort was rewarded. It is more expensive than the normal solder, but worth it to me.