alt Hacker NewsFor anyone thinking about learning to solder, there are several levels of what you can do with a soldering iron. The surface-mount stuff and ovens and microscopes, that's like level 3.
Level 1 is just being able to take two wires and connect them, reliably and cleanly. That's already immensely useful and requires very little skill and equipment. $50 gets you a nice soldering pen, another $50 gets you some tweezers, some flux and a roll of solder and you're set. Work near an open window and have a desk fan blow the fumes away from you, and you're already being more responsible than most people.
Level 2 is something like through-hole soldering, soldering wires to pads, the kind of stuff you'd do working with ESP32, building RC cars, FPV drones or custom IoT devices. Still easy to learn, just a few simple rules. Work quickly, know when to give up and let things cool down. Avoid touching the expensive e-ink display with your soldering iron. Get something better for fume extraction, spend 10 hours soldering and bam, you're better at soldering than literally 99% people out there, you can build and repair all kinds of stuff. This is where most of the cool YouTube stuff happens, your rctestflight and Tom Stanton and Stuff Made Here and Styropyro. You can do most of that with $300-$800 worth of gear, depending on how brave you are.
And then you can worry about SMDs and reflowing and other arcane stuff, or decide that you probably won't need it.
Replies
I do a lot of SMD rework and TBH soldering two wires together cleanly can still be a bigger pain in the backside. It's different, but not necessarily much more difficult (until you get to footprints like QFNs and BGAs where you can't see the pads at all, at least).
You don't need $300 gear to do Level 2. A lot of people who are pretty up there the "pro" scale use something similar to a FNIRSI DWS-200 200W, which I bought for $90, with shipping. It comes with 8 tips, and is extremely tight, supports fast tip switching, very fast heating (auto-spleep, etc), very nice interface, short tip, etc. Yes, the tip is not well-calibrated temp wise, but you can get a non-certified calibrator for $15. I work on RC planes and associated flight controllers with it all day long. The annoyingly expensive area is the hot air station, actually, but that's really a bit "out there" -- the cheap(er) copies don't yet exist, so it's still on the expensive side. A good hot air station is where it's more like lev 2.5 -- with it, you can do HDMI/USB port changes reliably, and in seconds. The BGA etc. is lev 3.
Beyond the soldering iron, my recommendations that are not too obvious at first sight:
* solder paste (verrrry useful, just get it, and use it)
* something to purify air that _pulls_ it (a reverse fan) with a carbon filter (~30 USD)
* magnifying glass, hopefully attached to a ring of LEDs + a stand so you can see what you are doing (30-60 USD)
* solder sucker, hopefully automated (5 USD non-automated, 80 USD+ automated)