I got the smallest ones for the Hakko desoldering tweezer finally. I tried it on a 0201 part that i needed to move, but the part was SO close to another part that it did not work well, and I ended up losing the part because it was too fiddly. If I had magnification maybe I could pull it off, but its still not ideal to heat it from the sides IMO
It does grip the 0201 part sideways just fine, but the heat is not applied to the pads very well and I could not get it off as easily as I wanted to, Plus I guess the big part it was up against was sinking heat. I realize in retrospect I could have probobly melted the solder on the adjacent part so the tweezers can grip properly and took the 0201 jumper off, but its some weird RF part next to it, and I don't dare disturb it, so I tried to go in from the side that does not have solder on it. If I was willing to melt the solder on the part that was too close, it would have worked fine. I soldered a 1mm long piece of kynar wire without insulation in place of the 0201 jumper with a normal iron lol
So if you are worried about very high density boards with various part sizes (small next to large), you have every reason to worry, this is not the optimum tool for it, it won't work well unless you are willing to disturb the nearby parts.
I need to either fix or replace the benchtop magnifier I have, because the damn springs are too weak or something, it kept moving down by itself and getting in my way, probobly another reason why I failed at my attempt. I don't normally work with stuff that I need to magnify. I don't like the digital ones either, I really need to get a mantis. But only if this stuff comes up more, for now no way.