Personally I like hot air reflow for multi-pin parts.
Something cheapish like an Ayoue works fine - I think Walmart has the 888A hot-air/solder-iron station listed for <$70 (I use the Ayoue 852 myself at home, because I have a very nice solder station already). The trick with hot air is not getting the air speed too high, do that and you'll start blowing off small SMD resistors and caps all over your workspace. Get it too hot and you scorch the plastic packaged parts.
Can't beat hot air though for re-attaching parts, get some solder paste from (anywhere really), and put the paste in a small modeling or plastic gluing syringe, and under a decent magnification, you can apply solder paste directly to the bare cold pads (don't drink coffee that day). Drop the part on the paste (just like a pick an place machine), and it'll stick there with surface tension until you reflow (heat) the part. IMHO the nicest thing about this method is that even if you drop the part a bit off alignment, the surface tension of the heated paste will pull the legs onto the pads. There are good YouTube videos for this method.
If you need to reattach a larger part like an IO controller or a chipset/BGA, you'll want to heat both sides of the board so it doesn't warp. Also for holding things in place you don't intend to remove, get some Kapton tape (the brownish-orange transparent stuff) and cover the "keep out" areas. Kapton sticks at temperatures up to 500°C is non-conductive, just make sure you let the board cool down again before you remove the tape, or you'll have tape covered in the parts you were trying not to remove...
Get used to this stuff, the leg-less parts are becoming the norm in the thinner form factors especially.
-Tim
Date: Thu, 28 Dec 2017 17:47:54 +0000
From: ron minnich rminnich@gmail.com To: coreboot coreboot@coreboot.org Subject: [coreboot] smd work Message-ID: <CAP6exY+K-9UJizGxQd3QJaOOw+XsaPR13sW44dPzasSQJKZUYg@mail. gmail.com> Content-Type: text/plain; charset="utf-8"
A friend of mine wants to do some SPI rework. He wants a 16M part in his chromebook, not 8M. (hmm, so do I). Given the huge expertise of this group, I wonder if you have advice about equipment he should get.
Soldering irons? hot air guns? magic wands?
thanks
ron