⛔ Забудь про БРАК !!! ✅ Калибровка поможет

Summary

The video presents a step-by-step guide to calibrating filament in Orca Slicer 2.4.2, using Bambu Lab PETG-HF as an example. The goal is to create a reliable filament profile, since printer auto-calibration cannot account for every spool’s material characteristics.

Preparation and profile setup

• Check the spool’s recommended temperatures and inspect about 2 m of filament for diameter irregularities or visible defects.
• Dry the filament before calibration. Moisture can boil in the nozzle, disrupt extrusion, and make results misleading. Store filament in an airtight container with desiccant.
• Create or select a filament profile in Orca Slicer. The presenter’s starting settings are a flow value of 0.97, pressure advance of 0.03, a nozzle temperature within the manufacturer’s recommended range, and a PETG bed temperature of around 70°C. These are starting points, not universal settings.

Calibration workflow

1. Temperature tower: Print across the filament’s recommended temperature range and compare bridges, overhangs, and layer bonding. The presenter’s best result was 245°C. Enter the selected temperature in the profile.
2. Maximum volumetric flow: Increase flow through a test print until extrusion defects or extruder skipping appear. In the example, the first defect occurred near 27 mm³/s. The presenter applied a safety margin and set the value to 22 mm³/s. Recalibrate if the filament, nozzle, or hotend changes.
3. Pressure Advance: This setting compensates for extrusion-system lag during acceleration and deceleration, improving corners and seams. The presenter prefers the tower test and measured a coefficient of 0.035 for this setup.
4. Flow Ratio: Choose the test surface with the most even top layer, without gaps or excess material, and adjust the profile. The example’s final value was 0.96. A second, more precise test can refine it.
5. Retraction: Test retraction distances to reduce stringing during travel moves. The presenter chose an additional 0.4 mm at the selected test height. Wet filament, excessive temperature, or nozzle damage can also cause stringing.
6. VFA (Vertical Fine Artifacts): Print a speed tower and find the speed with the least visible banding or ripples. The presenter selected 120 mm/s for the outer wall. Orca Slicer’s Resonance Avoidance setting can help avoid speed ranges that produce artifacts.

Calibration results depend on the specific filament and printer setup. Orca Slicer calibration tests may temporarily change settings, so the presenter recommends starting a new project after each test, entering the selected value in the filament profile, and saving it.

Additional advice and resources

• The video points viewers to separate material on cornering calibration and Input Shaping.
• A small calibration cube can help users recognize over- and under-extrusion visually, reducing the need to print many test plates for later spools.
• The presenter notes that the Benchy printed at the end had imperfect bridges, leaving that topic for a future tutorial.

Main speaker/source: The video’s narrator from the Verdana3d channel. Products and tools discussed include Orca Slicer, Bambu Lab PETG-HF, and the Orca Slicer Assistant.