>>2852074you got the layers, that can go as low as 0.04 mm on my printer, but makes it take forever, these are at the cost of time and the risk of heating and tuning issues.
then there is the size of the plastic coming out.
this is with the nozzle size and how much the filament is pushed over the other.
the nozzle size is the one I did for a project, it allows for the most dimensionally accurate parts without the cost of anything but time and tuning insanity (just like z, but with the other axis)
there is also the extrusion width. this sacrifices strength, because the nozzle cant make anything smaller than its size (like the.4 or.2 mm) but the plastic can be wider to a point. the wider plastic will make the lines thicker, improve layer adhesion and reduce print time at the cost of resolution and ugly edges.