FDM

Layer Height Changes FDM Print Detail, Surface Finish, and Time

In fused deposition modeling (FDM), layer height is the vertical distance assigned to each deposited layer. A model sliced at 0.20 mm is built from nominally 0.20 mm-high layers; changing that value changes how the slicer discretizes the model along the Z axis. That one setting affects several things at once: curved surfaces become more or less visibly stepped, small vertical features may be represented differently, each extrusion line changes shape, and the printer needs a different number of layers to reach the same height.