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Re:Have you ever seen soldering THIS close? [video] by jpasmore on Wednesday September 18, 2024 @10:37PM (#41587925)
This is, by far, the best video on soldering I have ever seen. Soldering by hand is a dying art...My dad had a car radio repair shop - when radios were repairable (Delco: https://en.wikipedia.org/wiki/Delco_Electronics) - taught me how...like riding a bicycle, you never forget...
Re:Have you ever seen soldering THIS close? [video] by dthakur on Wednesday September 18, 2024 @11:08PM (#41588103)
I respectfully disagree, and say that hand soldering is not a dying art. If you’re working on boards on the regular you probably have a soldering iron and use it often.
Re:Have you ever seen soldering THIS close? [video] by Taniwha on Wednesday September 18, 2024 @11:10PM (#41588115)
Yeah I agree, I solder parts like those in the video by hand (even occasionally BGAs with hot air)
Re:Have you ever seen soldering THIS close? [video] by elihu on Thursday September 19, 2024 @02:13AM (#41589073)
Yeah, hand-soldering as the means of mass production of consumer electronics devices has (mostly) died out, but the people who actually build and test things, or the people who fix consumer electronics devices, still usually do a lot of soldering.

It's also a necessary skill in a lot of technical hobbies. Modular synthesis by means of DIY modules, the whole mechanical keyboard thing, electric guitar maintenance...

Re:Have you ever seen soldering THIS close? [video] by thebigman433 on Thursday September 19, 2024 @12:57AM (#41588650)
Id definitely disagree about hand soldering being a dying art! There are lots of other great techniques, but hand soldering is still vital to developing hardware. Any hardware company worth it's salt has at least a couple rework technicians that are absolute wizards with soldering.

Also stuff like reflow solder is/can still be done by hand! Its a common thing to do if you need to touch up or modify a PCB and dont want to reflow the whole thing/damage any components

Re:Have you ever seen soldering THIS close? [video] by weinzierl on Thursday September 19, 2024 @01:49AM (#41588911)
Soldering by hand is a dying art...

I'm not sure. Back in the day we avoided SMD like the plague and it had a reputation of being unapproachable. THT parts were highly sought after and I would even say that a good deal of the success of AVR was because they offered THT versions of their µs long after most others had stopped. Some of us even engaged in the uphill battle of lead-free soldering only to be disillusioned.

We thought hand soldering will die with THT but it didn't.

I see a young generation that has mostly overcome these hurdles. With their young steady hands, sharp eyes, high-lead solder, small temperature controlled irons and other modern equipment they just go about. I envy them.

Re:Have you ever seen soldering THIS close? [video] by dotancohen on Thursday September 19, 2024 @02:58AM (#41589297)
High lead solder? Are you sure about that?

For what it's worth, I took the time to learn leadless soldering specifically so that I could teach my kids. I like to introduce them to safe hobbies (that why they all went skydiving before their 10th birthday, too).

Re:Have you ever seen soldering THIS close? [video] by jdietrich on Thursday September 19, 2024 @05:19AM (#41590014)
Leaded solder is safe to use if you wash your hands afterwards. Leaded solder - particularly 63/37 eutectic solder - is much more forgiving of poor technique. Lead-free isn't a massive inconvenience if you know what you're doing, but it can be absolutely infuriating for novices.
Re:Have you ever seen soldering THIS close? [video] by dotancohen on Thursday September 19, 2024 @10:35AM (#41592370)
What about breathing the fumes? Also, doesn't (long-term) exposure to the fumes severely affect skin? I remember the folks soldering a lot of things for the Gemini and Apollo programs had very wrinkly, obviously damaged skin on their faces.
Re:Have you ever seen soldering THIS close? [video] by Kirby64 on Thursday September 19, 2024 @11:00AM (#41592625)
There is no lead in the solder fumes. If anything, lead-free solder is substanially worse, since the flux used for lead-free solder is a lot... harsher. Either way, this can be largely fixed by a small fume fan.
Re:Have you ever seen soldering THIS close? [video] by dotancohen on Thursday September 19, 2024 @11:12AM (#41592770)
Thank you. In fact, I drive a small horizontal quadcopter propeller with a 3.7v LiPo while soldering to pull the fumes away.
Re:Have you ever seen soldering THIS close? [video] by nolist_policy on Thursday September 19, 2024 @02:54AM (#41589285)
I actually prefer lead-free solder because its more aggressive flux and higher soldering temperature.

This allows burning away and tinning enameled wire with the soldering tip.

Though there are only two lead-free solders that qualify. I use the Felder Ultra-Clear EL Sn100Ni+. The other one is the Amasan BF32-3.

Re:Have you ever seen soldering THIS close? [video] by jve on Thursday September 19, 2024 @04:56AM (#41589916)
I suspect tip oxidation is an issue with leadfree? Or isnt it?

At what temperatures you solder mentioned leadfree?

Re:Have you ever seen soldering THIS close? [video] by jdietrich on Thursday September 19, 2024 @05:41AM (#41590128)
Tip life is inevitably worse with lead-free solder. Using a brass wool cleaner rather than a wet sponge will help prolong tip life, as will the regular use of a suitable tinning/cleaning paste (e.g. Hakko FS-100 or JBC TT-A). Keep the tip wetted with solder as much as possible - a completely "clean" tip will oxidise much faster than one with a protective layer of solder.

The correct tip temperature for any hand soldering operation is the lowest temperature that will allow the joint to be completed in two to five seconds. In practice, that depends on a host of variables - the composition of the solder alloy, the properties and calibration of your iron, the thermal mass of the joint etc. A usual rule of thumb is the melting point of the solder plus 150°C, but your mileage will vary.

Re:Have you ever seen soldering THIS close? [video] by lukego on Thursday September 19, 2024 @05:24AM (#41590031)
Oxidation is a big problem with the harsh no-clean fluxes in many cheap lead-free solder wires. Switching to a rosin flux (RMA or RA) name brand solder should fix that (did for me.)

Metcal have a great big doc on tip care that covers this.

Re:Have you ever seen soldering THIS close? [video] by pkolaczk on Thursday September 19, 2024 @03:30AM (#41589440)
Maybe it’s just me but I find SMT easier and faster to prototype with than THT. Apply paste, place all components on the board with tweezers, reflow, done. With THT I have to bend / cut the legs of most components, and solder each point individually.

As for “high lead solder” - you won’t buy it in Europe. We had to learn using lead free for rework and you know what - it’s not much different, assuming you have high quality equipment.

Re:Have you ever seen soldering THIS close? [video] by mistaken on Thursday September 19, 2024 @03:44AM (#41589503)
As for “high lead solder” - you won’t buy it in Europe. We had to learn using lead free for rework and you know what - it’s not much different, assuming you have high quality equipment.

That's bollocks. You can buy leaded solder in Europe just fine. You only need to worry about lead-free if you want to sell a commercial product.

Re:Have you ever seen soldering THIS close? [video] by pkolaczk on Wednesday October 02, 2024 @11:52AM (#41721898)
You can’t in Poland if you don’t own a resistered business. I tried and nope, they won’t sell it to individuals.

But thanks for letting me know, maybe it was just a local problem of the particular store, but a EU policy.

Re:Have you ever seen soldering THIS close? [video] by pta2002 on Thursday September 19, 2024 @05:25AM (#41590035)
I have a roll of 38% lead solder on my desk which I bought last year from Leroy Merlin in Portugal, so you can definitely buy it in Europe.
Re:Have you ever seen soldering THIS close? [video] by atesti on Thursday September 19, 2024 @09:45AM (#41591771)
Any idea where I can buy some from Germany? Reichelt stopped to sell it and I did not have chance to stock up
Re:Have you ever seen soldering THIS close? [video] by weinzierl on Friday September 20, 2024 @04:09PM (#41605168)
Nowadays I don't bother with Reichelt or Conrad and just get must of my stuff from Mouser. They offer leaded solder in all kinds of forms. I have to say that I have not tried out if they will actually deliver it to Germany though.
Re:Have you ever seen soldering THIS close? [video] by imtringued on Thursday September 19, 2024 @06:48AM (#41590486)
If you can do your joints on first try, lead free solder is exactly as "difficult" as leaded solder. I never notice the difference except when I have to remove it.
Re:Have you ever seen soldering THIS close? [video] by willis936 on Thursday September 19, 2024 @07:02AM (#41590557)
Yeah that's true if you have a reflow oven and avoid 0402 and below. Ovens aren't cheap or small though.
Re:Have you ever seen soldering THIS close? [video] by BenjiWiebe on Thursday September 19, 2024 @05:53PM (#41596747)
Can't you modify a toaster oven to make a usable reflow oven?
Re:Have you ever seen soldering THIS close? [video] by foldr on Thursday September 19, 2024 @04:42AM (#41589842)
>Some of us even engaged in the uphill battle of lead-free soldering only to be disillusioned.

I've never had any trouble using lead-free solder for through-hole or SMT (and I don't have any expensive or sophisticated equipment).

Re:Have you ever seen soldering THIS close? [video] by leoedin on Thursday September 19, 2024 @08:18AM (#41591028)
What’s strange is that the larger SMD packages are far simpler to solder than THT ones are. Give me an 0805 or SOP any day over a THT package.

I guess the real driver towards hobbyists using SMD is cheap and fast PCB design. You can’t really do stripboard or wire wrap with SMD packages.

Re:Have you ever seen soldering THIS close? [video] by martin_a on Thursday September 19, 2024 @02:16AM (#41589085)
> Soldering by hand is a dying art...

Let me tell you that I'm holding up the flag. Very poorly and with shaky hands, but I'm trying to hold it up... :-D

Re:Have you ever seen soldering THIS close? [video] by iamflimflam1 on Thursday September 19, 2024 @03:53AM (#41589550)
That’s something that is so obvious under a microscope. My hands are pretty shaky, under a microscope it looks like there’s an earthquake going on.