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Kester 24-6337-0027 Solder Roll, Core Size 66, 63/37 Alloy, 0.031" Diameter

Brand: Kester

4.9 820 ratings

| 26 answered questions

$37.25

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Country Of Origin: China
Model Number: 24-6337-0027
Item Package Dimension: 2.49999999745" L x 2.299999997654" W x 2.299999997654" H
Item Package Weight: 1.0405 lb

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Product details

Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 2.5 x 2.5 x 3 inches; 0.7 Ounces
Item model number ‏ : ‎ 24-6337-0027
Date First Available ‏ : ‎ August 31, 2009
Manufacturer ‏ : ‎ Kester
ASIN ‏ : ‎ B0149K4JTY

Best Sellers Rank: #48,390 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #141 in Solder

Customer Reviews:
4.9 820 ratings

WARNING: California’s Proposition 65

Product Description

Sn63PB37 3.3% 66/44 .031 diameter

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1lb

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Customer reviews

4.9 out of 5

820 global ratings

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Charlie

I'm not a professional

Reviewed in the United States on July 14, 2023

Verified Purchase

I have very little experience with soldering, and with that being said I've worked with numerous solders. This is by far the easiest melting solder I've personally invested in. I've used a higher quality solder, but it was a strand of unknown solder given to me so I have no idea what it was. Do yourself a favor and buy this roll. I'd imagine it will last me several years if not a decade. Definitely a must for rc soldering! I also used it to solder speaker connections in my truck

Helpful

Kindle Customer

Good solder! Buy some!

Reviewed in the United States on December 7, 2014

Verified Purchase

Great product for RC modelers and electronics hobbyists. This is a good value in a big, economy-sized spool which should last me a year or two. A dispenser is a good idea; this roll is much heavier than a standard hardware store pack and can be hard to manage. Mine likes to jump off of my table and go for a joy ride at the most inconvenient times, rolling across the room trailing wire. I guess another option would be to transfer some to a smaller spool as you use it.

This .031" diameter is a pretty good compromise size for cables ranging from 28 to 12 AWG. It will even work on fairly roomy circuit board pads; however, I generally keep a small supply of thinner-diameter solder on hand for that kind of work.

When I started out soldering cable harnesses, connectors etc. for my models, I found it pretty frustrating. As we know, the goal is to get the solder nicely liquefied so it will flow freely through the work, then keep things very still while it cools and solidifies. I found that, as I heated the cable and applied solder, it tended to soften, but getting it to melt completely enough to flow into the twisted wires - especially on bigger cables - wasn't easy. Instead I'd get a mushy glob that would sit on the surface without making good penetration. Then, when I was ready to let it cool, it seemed to take forever to solidify, making it hard to keep everything steady.

As tempting as it may be, in such cases, to just stick the ends of the wires into a nice big glob of half-melted solder, let that cool and hide the pathetic result under a wad of electrical tape, the end product will NOT be a strong, reliable connection, able to withstand the necessary current without heating up, and may fail completely. Ask me how I know!

Well, it turns out that the answer is in the choice of solder. For some reason, none of the instructional materials I studied early on even mentioned one of the keys to happy, safe soldering work. It lies in the concept of a "eutectic" mixture or alloy. For any combination of two or more metals, there is a certain ratio between the amounts of each which, when combined, yields an alloy with the lowest melting point possible. In the case of lead and tin, an alloy commonly used for electrical soldering, that ratio is 63 lead and 37 tin. That's the ratio used in this solder.

The practical result, and the reason why a eutectic solder mix works so well, is that when it melts, it goes directly from the solid to the liquid state or "phase". When it cools and solidifies, it does the opposite. The intermediate state, known in technical terms as a "glob", is completely skipped! When it gets hot enough, whoosh! It instantly liquifies, and flows beautifully into the cable ends and/or onto the connectors. (Remember to always heat the cable or connector first, and let it heat the solder!). Remove the heat, maybe blow on it gently for a second, and whoosh! It's back to a nice, shiny (which is what you want) solid. A strong, reliable electrical connection is born.

Just try it, you'll like it. Unfortunately, if you look at the labels of the majority of solders sold in hardware stores, you'll find that the lead/tin ratios are 60-40, not the "magic" 63-37. I have no idea why the 60-40 is even made, though if I had to guess, it may be because the "glob" state is desirable for certain types of users - plumbers, for example, or lazy electricians who prefer the "stick wires ends in glob" method described above. Just don't be that guy/gal, unless your fire insurance is paid up, and you're ok with watching smoke pour out of your electric model aircraft in the seconds before impact.

4 people found this helpful

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Tom Foollery

I trust Kester

Reviewed in the United States on June 19, 2023

Verified Purchase

Can't say I've used this roll yet but it's Kester and it has to be good. I used an off brand once 35 years ago, now I only buy Kester brand.

Helpful

Spukhafte

Plumbum.... A "other Metal" by any other name would smell just as sweet.

Reviewed in the United States on June 10, 2014

Verified Purchase

Have you ever wanted to solder micro PCB transistors and resistors like a demi god/ robot? Then this solder is for you.

Do you want a lead solder with a competent flux that will bond your connections like a champ, and give off fumes with the sweet taste of Bismuth salts and antimony that pairs nicely with a glass of Montepulciano or a Sanghiovese?
Then this flux core is for you.

Do you want to live as long as possible and keep your sperm count up? Then maybe you'd prefer a Rohs solder, and after throwing it across the room you'll realize: laboratories and electronics are not for you.

We all die sometime, we're surrounded by death. No need for the constant reminder from our electronic devices that die before their time, due to inferior Rohs compliant solders.

Women like mysterious dangerous men, and what could be more dangerous than a man who breathes fire and lead fumes? Nothing. Take it from me: a scientist; put a roll of this bad boy in your laboratory and watch the panties drop. Now I know what you're thinking: "we have a disparity in the sciences, with too few women taking degrees in the hard sciences thanks to years of uninformed dogmatic gender role ascribing women to careers other than the hard sciences. Now we're paying the price. Do you realize how hard it is to get a lady in your laboratory?"

Well, true. And no. I don't.
because I use spools of lead solder.

Fact: women are drawn to the sweet smell of Bismuth salts and the pheromones excreted by a man with acute lead toxicity coursing through his veins are unmistakably unique.

It intoxicates their senses, they're drawn on a genetic level to procreate with you *immediately* because, with lead, there might not be much more time.

Pretty sure Darwin mentions the mechanics of this exact biological drive in his work "The Expression of the Emotions in Man and Animals" but I wouldn't know. I'm a real scientist, not a biologist so I've not the time to read such quackery.

What I do know about women I've learned from observation and captain Kirk.

From observation I can assure you, heat up some of this solder, sit back and watch the women come in droves. Your lab will make Hugh's house look an all boy's academy. Hang another roll from your review mirror. Trust me. This solder will save us from the gender disparity in the sciences. It will save future generations. But, don't wait, copulate. After all, it is lead bearing solder, so there's not much time.

I will continue to buy this solder.

689 people found this helpful

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Nigel Thompson

Excellent solder

Reviewed in the United States on March 20, 2023

Verified Purchase

I do a lot of new work as well as repair work and I love this solder. Not much else to say.

Helpful

Madgadget

Best for electronics and lower resistance imo.

Reviewed in the United States on March 2, 2023

Verified Purchase

Soldered lipo batt and esc connectors for a speed project.

Helpful

FBB Custom

A good choice

Reviewed in the United States on February 11, 2022

Verified Purchase

I finished my first Radio Shack roll of solder recently (after about 15 years with it) and needed something new. I had heard good things about Kester so I decided to check this out. The diameter is much much smaller than the RS roll, which I was worried about, but it's turned out to not be a big deal. The solder has been great so far and I finally have a setup that gives me as little frustration as I think I can get. At this point, it's not the iron, it's not the wire, it's not the solder, it's on me if there is any difficulty! Now if only I could find the ultimate helping hands setup...

4 people found this helpful

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