Speed Mod
Speed Mod oscillates how fast the nozzle travels around the perimeter as a function of angle. It does not move the mesh: the toolpath geometry stays the same while feedrate is modulated, so you can exploit speed-dependent gloss, slight width change, or material sheen. Use it when you want circumferential variation that reads in the finish rather than in measured wall position.
Preview
Effect Controls
Interactive preview is available in the interactive reader.
Parameters
Frequency- How often speed cycles around the layer (0.1–30). Higher values pack more alternations between fast and slow segments along the loop.
Amplitude- Depth of speed variation as a percentage of the baseline feed (0–10). Larger values exaggerate the difference between slow and fast arcs; zero disables modulation.
How It Works
The modulator outputs a normalized waveform as a function of angular position. That value is mapped into a speed multiplier (or delta) applied when the slicer or exporter emits moves, so each short segment of the perimeter can be assigned a different target speed.
Because displacement is unchanged, layer alignment and nominal wall thickness from geometry are preserved; only motion timing changes. Results depend on filament, temperature, and cooling, so the same numeric settings can look different across materials.