As it turns out, surface mount soldering is actually
easier than through-hole! The difference is a matter of technique, a simple but perhaps not immediately obvious one. And some stuff to help with it.
Liquid solder flux is key. The core of the method: Melt a small blob of tin onto a solder pad. Solder flux is applied to tin blob. Hold component to blob with tweezers. Melt blob with iron. Component will now stay put. Apply solder to the other pad. Done.
This makes use of the solder's surface tension and adherence properties; The solder only wants to stick to hot metal surfaces, and surface tension will actually align the component on the pad. Very clever! The step that adds flux is there to allow us to re-melt the solder, have it flow well, and crystallize correctly when it cools (so no cold joints).
Chips are soldered with a logical extension of the technique that further employs the solder's preferences for sticking to this and flowing like that :)
After having been taught this, I now find through-hole much more of a hassle. It's nice to be free of the hole-poking and board-flipping and leg-snipping. And it's nice to be able to avoid the increased circuit noise that the superfluous metal brings (the legs are effectively antennae!).
Here is where I learned: https://store.curiousinventor.com/guides/Surface_Mount_Solde...