I use Tenma, Size #1 Width .035" (0.9mm) Part# 21-8355 but any good quality thin braid of same size with flux would work. Thicker braids tend to be a little harsh and just move the solder instead of soaking up like the really fine braid.
An alternative I have used is to cut a 1 inch piece of braid and hold it in your tweezers. cover all other areas with Kapton tape except area you are working on to 1. protect other components from heat and 2. to keep the other components from moving. put flux down on pads working on and focus heat on braid. then using wick like a paint brush, lightly brush solder (Do not brush against other components) and it will soak up. I keep a few cut pieces near by to change up after piece is full of solder on tip.
Just try to keep it short as an iron is better to focus heat on area you are working on and the hot air is indiscriminate and too much heat is not good for the board or for the components surrounding the area you are working on or the reverse side.
Check out this video at 35 min to about 37 min.