Layer height

Definition

Layer height is the thickness of each deposited (FDM) or cured (SLA) slice. On FDM a common rule is 25–80% of nozzle diameter: 0.2 mm layers with a 0.4 mm nozzle are typical. On resin, thinner layers need less exposure per slice but more slices, so total time is not linear. Changing layer height changes volumetric flow, cost and surface finish together.

Calculators that use this

• FDM calibration & firmware

  Z-Axis Optimal Layer Height

  Snap a desired FDM layer height to the nearest full-step multiple of your Z lead screw and motor step angle to reduce microstep banding.

• FDM hardware & mechanics

  Nozzle Size vs Layer Limits

  Get min, typical and max FDM layer height plus min/max line width from nozzle diameter using 0.25–0.75× height and 0.9–1.5× width rules of thumb.