Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
I've been getting some very nice 85lpi results on 225S.. have to work.on my 30% and above calibration... (thanks to Pierre for pointing this out) but the mesh certainly holds the dots all the way down to some really low #s.Give it a try, you'll be surprised that the normal rules don't seem to apply with thin thread mesh.
I think the bigger question with the smaller dots and more open area means that the smallest dots can literally fall in the middle of the mesh.