Hello all! This is my first thread although ive been into 3d printing for quite some time.Recently i choose to buy some 0.2mm hardened steel nozzles to give them a try. ive always used 0.4mm nozzles and i was trying to achieve perfect print quality in terms of outer surface. 0.4mm nozzles ended up being too big for 0.04 or 0.08 layer height so i decided to buy 0.2mm nozzles. It seems its not so easy to print with perfect quality just out of the box so i started triying different settings.My PETG prints perfect with outer walls speed up to 30-40mm/s (higher just leaves tiny artifats i just dont accept). fan 20% and some other minor settings like coasting, pressure advance and input shaping(although this last one at low speeds i thing is not quite doing the job). PETG-CF prints looks astonishing with an outer surface almost perfect and without layer lines.ive tried to go lower in terms of layer height up to 0.04mm(best i can do with my ender 3 v2) and works but i started noticing some artifacts due to too big nozzle diameter so i bought 0.2mm nozzles hoping this would go away.im finding very dificult to print with this nozzles and specially very small models and i ve tried lots of settings to make it work.At the moment in comparison with teh 0.4.. nozzle ive reduced speeds drastically, which makes sense. next step was also decrease print temp and increase fan because cooling issues appeared. also reducing flow to 95 seems to help. I want you guys to share your thoughts on this and advice to get to perfect prints on 0.2mm nozzle with very low layer heights. Also i havent tried the PETG-CF on 0.2 nozzle but im willing to, since nozzles are so cheap taht if one gets clogged or damaged, i can just replace it.