what solder for smd

I use 63/37 no clean from MG Chemicals myself... As long as it's a good quality solder (Don't buy cheap solder, I swear some of it's recycled from old boards...) you'll be good. You probably want a thin solder wire, 100. Like 0.8mm or smaller.
 
Use 22 to 24 gauge 63/37 solder, adding rosin as necessary. You'll also need desoldering braid,
to remove the excess solder that often ends up bridging pads. And a good magnifying glass and light,
along with a lot of patience.
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