Resolution typically refers to the Z minimal layer thickness and X-Y resolution that can be achieved by the 3D printer. Since all FDM 3D printers create parts with a layering effect, the finish quality of printed parts is directly affected by layer thickness resolution. The thinner the layers are on a given part the smoother the part finish will look, but it will also take longer to print. Some 3D printers often report minimum layer thickness as low as 0.05 mm.