Calibration Workflows
Calibration connects three things: printer hardware, filament behavior, and slicer settings. Run calibration per printer, material, nozzle, and profile combination.
First-layer calibration verifies bed level, Z offset, bed adhesion, and extrusion consistency.
Watch for:
- Lines not touching.
- Lines too flattened.
- Corners lifting.
- Nozzle dragging.
- Uneven squish across the bed.
Fix bed/nozzle issues before using horizontal expansion or flow settings to compensate.
Temperature affects flow, stringing, surface finish, layer adhesion, and overhang quality.
Run a temperature tower when:
- Switching filament brand.
- Switching material.
- Changing nozzle or hotend.
- Seeing stringing, weak layers, or rough walls.
Flow calibration tunes extrusion amount.
Symptoms:
- Over-extrusion: swollen walls, rough top surfaces, oversized parts.
- Under-extrusion: gaps, weak walls, transparent top fill, poor layer bonding.
Tune basic extrusion before tuning wall flow or horizontal expansion.
Retraction reduces stringing during travel moves.
Tune retraction when:
- Wisps appear between islands.
- Blobs appear at travel starts/stops.
- Gaps appear after travel moves.
- Filament grinds or heat creep starts.
Direct-drive printers usually need much less retraction than Bowden printers.
Pressure advance sharpens corners and reduces start/stop artifacts. Cindr3D can guide firmware-specific workflows for Klipper, Duet/RRF, and Marlin.
See Print Tuning and Utilities for commands and pressure advance flow.
Input shaping reduces ringing caused by frame vibration. Run it after the machine is mechanically sound and belts/wheels/rails are in good condition.
See Print Tuning and Utilities for firmware commands.
Measure cooled prints with calipers. Separate causes:
- First-layer squish affects bottom dimensions.
- Flow affects wall thickness.
- Horizontal expansion affects consistent XY offsets.
- Steps/mm or motion calibration affects global scale.
Adjust in small steps and reprint the same test.
Max volumetric speed defines how much plastic a hotend can melt consistently.
Tune it when:
- High-speed prints under-extrude.
- Large nozzle prints show inconsistent lines.
- Stronger materials need lower speeds.