Review on Premium Kester 331 Organic Core Solder 63/37 .031 1 lb. Spool for Efficient Electronics Soldering by NTE Electronics (1) by Rafael Gomez

63/37 costs a little more than 60/40 but is worth the price (1) it can be used at lower temperatures (2 ) it cools and installs FASTER (3) you can get your job done more easily (4) in the long run you'll use less than 60/40 because the overall cost is about the same (5) better if you're working with finer parts. I could go on indefinitely over 63/37, but I can work faster and get more work done in less time. I put my 60/40s on hold and don't know what to do with them?