this post was submitted on 25 Dec 2023
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I recently came to the realization that I've been kinda punishing myself with cheap no-name solder that is really difficult to work with.

I reluctantly bought this (rather expensive) lead free solder for around $25 and the difference really took me by surprise - it melts and flows so easily!

Kinda got me wondering what everyone else has been using for solder, or what's worked well for you so far at least?

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[–] [email protected] 1 points 8 months ago (1 children)

While 60/40 is a joy to work with, I gave SAC305 a shot and it's been totally fine for my uses with hobby electronic projects. You need to run your soldering iron hotter so it'll be rougher on your iron's tips, but I haven't noticed much difference in ware, etc.

As a hobbyist, contributing to junk with lead in the world is something that's been bugging me for some time. Additionally, it feels silly but there's also a certain relief in not having to worry as much about contamination between my workbench and the rest of my environment.

If you haven't already I'd also suggest getting some good flux. The Amtech NC-559-ASM has been working great for me.

[–] [email protected] 0 points 8 months ago (1 children)

That makes sense! In my case I actually needed to turn down my iron temps for the lead-free solder, previously had it ridiculously high from when I was trying to work with the cheap no-name solder.

This new lead free stuff is great, it comes with a price tag but it's eons better than the no-name stuff IMO.

I have flux (syringe type) but I have no idea if I'm using it correctly, or if it's just not that great. Haven't noticed too much of a difference when soldering with it, apart from needing to brush off the circuit board with some contact cleaner to remove the residue

[–] [email protected] 1 points 8 months ago (1 children)

What temperature are you using?

[–] [email protected] 1 points 8 months ago

350°C, although I occasionally turn it down to 325 when I don't need the extra heat.

When I was using my older, cheaper solder, I had the iron maxed out at 420 and that wouldn't melt or flow easily

[–] [email protected] 0 points 8 months ago (1 children)
[–] [email protected] 0 points 8 months ago (1 children)

With no ventilation! Mmm, smells like dying brain cells.

[–] [email protected] 2 points 8 months ago

The smoke is from the rosin core and flux. Lead free is equally bad for the lungs.

I wouldn't eat after touching Lead though.

[–] [email protected] 1 points 8 months ago

Kester 63/37 no-clean 22AWG for leaded work, SN100C no-clean for RoHS. Mg chemicals and chip quik are good alternatives, Kester can be expensive to justify for home use.

[–] [email protected] 1 points 8 months ago (1 children)

I have 60/40 leaded solder that worked pretty well. I'm definetly going to invest into some good lead free solder

[–] [email protected] 0 points 8 months ago (1 children)

I'm all about the leaded solder -- but I also use it very infrequently and don't worry about the motility of my swimmers ;)

[–] [email protected] 1 points 8 months ago

I think it’s the your synapses you need to worry about, but I forget, I love my 60/40 too. Still have a couple big rolls from RadioShack.

Really though if you wash hands after handling it, and use it in such small hobby scale quantities as most, it won’t matter. The smoke from the burning rosin is probably more dangerous.

[–] [email protected] 1 points 8 months ago* (last edited 8 months ago)

Ages ago (80's I think) there was talk of making lead free solder the only type that was available to consumers, and my great uncle (a deal horder) went out and got 2 cases of radioshack 64/40 resin core. Pretty sure it's the same stuff you can still buy today, but I've got another 4 spools in my kit (that are old enough to drink).

In my uncles defense sometimes his deal hording paid off. He once saved a family reunion when our venue fell through because he happened to have a dozen brand new hibachi grills in the apartment he rented just for his stuff. And he made a small fortune when he bought a bunch of freon before it went off the market.

[–] [email protected] 0 points 8 months ago (1 children)

I use cheap trash solder, and dislike soldering, very possibly because of it

I'll look into upgrading my solder, thanks 👍

[–] [email protected] 1 points 8 months ago

I got some cheap solder with my solder station and it was the bane of my existence. Found some leaded solder I think I got from radio shack years ago and it works so well. I hate to say it but I haven’t yet had good success with unleaded solder. Someone please save me from the brain damage.