Resin printers still build in layers, and lines show most on gentle slopes, on thick layer settings, when layers shift during peeling, or when exposure varies. Thinner layers, anti-aliasing, better orientation and stable peel settings reduce them; screen resolution alone does not.
Resin prints are smoother than filament prints, and their layers are still visible in the right light.
Why resin layer lines show
Each layer is a flat slice. On shallow slopes, the step between layers is spread across a wide area and becomes visible. Thicker layer heights make each step larger.
Resin print settings that reduce lines
Thinner layers on detailed models. Anti-aliasing and blur settings in the slicer. Orientation: tilting a part so large surfaces are not nearly flat to the build plate.
Mechanical causes of resin layer lines
A loose build plate or Z-axis play shifts layers. Peel forces on large layers can move a part slightly. Worn release films increase those forces.
Temperature and exposure in resin prints
Resin that warms or cools during a long print cures differently, which can show as bands. Stable room temperature or a heated vat helps.
Where screen resolution fits
Screen resolution and pixel pitch describe detail within a layer. Layer lines are about the vertical steps, and a finer screen does not remove them.
If this page and the manufacturer’s manual disagree, follow the manual. Every laser power, speed, build volume, resolution, temperature and safety rating on this page is taken from the maker’s own documentation, with its unit as published and its source named — none of it is measured here. A figure is written the way the maker states it and is not converted into another convention, because the converted value would be a different number. And for any resolution figure: a screen’s pixel pitch, a minimum layer height or a step size is a specification of the machine, not a tolerance measured on a part. The accuracy of a finished object depends on the material, the calibration and the design. This page reports the maker’s figure as a specification and never as a guaranteed precision.
Questions makers ask before buying
What is anti-aliasing on a resin printer?
A slicer feature that softens the edges of each layer’s pixels with partial exposure, smoothing steps on curved surfaces.
Do horizontal bands mean something different?
Regular bands can point to mechanical issues such as a loose platform or Z-axis, or to temperature changes during the print.
Last reviewed 15 September 2026