WSW SCN M1 (T0051404999) Lead Free Solder Wire, Dia: 0.3; 0.5; 0.8 mm / 0.012; 0.020; 0.031 in, Wt: 21 g / 0.740 oz, Alloy Sn99.3Cu0.6Ni0.05, Flux content 3.5%

Works very well and easy to use.

I bought these for hobby/modeling caus it looks like pipes.

Disclosure: This was sent to me for free via the Vine program. I did not receive monetary compensation to write this review, just the product itself. I'll admit, my bugbear is lead-free soldering. There's just something about it that intimidates me. I'm not the greatest at soldering so I tend to crutch on having the free-flowing properties of lead in solder to help do some of the work for me. The last time I tried to lead-free solder/braze...it did not go well. It was in college, I made a mess of my project, and the shop foreman had to do the rest of it by himself just to make sure what I was making wouldn't explode upon heating. So, I'm nervous about it. But when I saw Weller had this sample pack of lead-free solder in varying thicknesses...I knew it was time to try again. So I picked up my Weller WLC100, put in the order for review, and got to work. The item comes in a small box with three spools of varying diameter solder. It tells what it is, the reorder number, the thicknesses, the length, and the composition of the solder. These are Tin 99.3, Copper .6, and Nickel .05 alloys. Yes, that adds up to more than 100%. Don't sweat it. Well..I mean, do sweat it but just don't worry about it. Just know that it's a nearly pure tin solder, suitable for anything that requires no lead in it. It comes in .3mm, .5mm, and .8mm. After running the soldering station for awhile and burning some of the solder of each thickness, I found that the .5mm was the sweet spot, at least for me. It provided a thin enough wire to melt quickly and form a bead without leaving any unsoldered spots on the board (I also used it on some old copper piping as well). With the .3, it heats quickly and flows better but you're gonna burn more to get the same end result. With the .8, it heats slower and takes longer to melt and tends to be more...globule-y, if that makes sense, since it doesn't have the lead's low melting point to help with flow. Looking at the scrap, I can say that this is definitely a good product. You don't get much solder, I'll give it that, but it's $10 for nearly 15 feet of each type of solder. If you want to give non-leaded soldering a go, this is what I'd pick up. It's Weller, so you know the composition will be solid (even if rounding to significant figures on the box isn't their strong suit) and there'll be no impurities. It gives you a wide range of solders to try before you commit to a full spool to see what solder is your sweet spot solder. And...again, it's $10. Pretty cheap for 45 ft of lead-free.

I bought this for soldering wires to a minidin plug. It worked as I hoped and the temperature was low enough to prevent damage to the connector. I set my iron to 500°F.

Value for the money

(1) I would like a more Solder for the 3-pack set. they are tiny packs. idea of 3 sizes is good but the amount is poor. (2) The 3 plastic containers should be made to Snap together. I have cheap copper braid in containers like this and they can all stack and snap together for storage. it just takes making the bottom ring of the plastic mold to do this. (3) they did not put on any of the 3 small solders or the box the Melting point temperature. this is a simple thing to do and expected nowadays. then I was looking all over their website for it, a waste of time, they should Print it on the label.

Having spent my career in electronic engineering and development, I have never been far from the Weller brand, and this Weller WSW SCN M1 Lead Free Solder Wire reassures me that the company has not changed. The three spools of wire solder are each of a different thickness; though all three are suitable for most work, Weller's assortment lets me choose the finest solder for tiny SMDs, the middle gauge for the slightly larger components, and the largest (still a very petite 0.031") for attaching jumpers or connectors. The advantage of having the correct size for each connection lies in both time and control, as the thinner gauges will melt more quickly, reducing the danger of overheating, and are less likely to run into adjacent connections. I really appreciate the fact that Weller WSW SCN M1 Lead Free Solder Wire is manufactured with a core of high-quality non-acid flux, ensuring that the exact amount of flux needed for a connection is right at the tip of the soldering pencil. This makes for better connections, and reduces the need for cleanup. I'm also very happy with the plastic spools on which this solder is supplied, which lets me expose just enough of the solder for what I'm doing without the mess and risk of a long, exposed solder "tail" dragging over the circuitry. This is especially helpful in onsite work where other operating equipment may be nearby. Lead-free solder has now replaced the dangerous lead-based solder we used to use, but not all lead-free solders are the same. Weller's specific formulation of tin, copper, and nickel is, in my opinion, the ideal for low melting temperature, high strength, and excellent electrical conductivity. I like Weller WSW SCN M1 Lead Free Solder Wire, and recommend it for anyone who works - even occasionally - with circuitry.

First, I'm no expert in soldering. I'm in IT and generally nerdy, so it has come in handy, especially now that my sons like doing Arduino and other electronics projects. The reason I got this is my supply of 60/40 lead solder that I got from Radio Shack is dwindling. Man, I miss Radio Shack... But I digress. I use lead solder because it's easier. As I mentioned, not the best or most knowledgeable about soldering, so I just want it to work. The couple of times I tried lead-free for health or environmental reasons or whatever, I always had issues and I guess just decided that even it kills me, I want the solder joint to be done. Having tried Weller WSW SCN M1, I don't think I need to chose between the two. It just worked. Nice shiny solid solder joints; no muss, no fuss. I also like the spools they come on in the multi-pack, it reminds me of the sample dental floss I get at the dentist and it holds the solder wire in place and doesn't unspool, which tends to be an issue with the thinner wires. Will definitely buy this again.

4/5 due to tight fit. Sparkly clean