Troubleshooting

A failed print is an observation, not a diagnosis. The same gap, string, crack, or layer shift can come from the printer, material, build surface, slicer, geometry, environment, or maintenance state. Start by recording the setup and the exact symptom, then change one plausible variable at a time.

Start with the symptom

• First-layer gaps, ridges, and curling — separate nozzle-to-plate, surface, calibration, material, and geometry clues.
• PETG stringing and oozing — distinguish moisture, nozzle contamination, temperature, travel, and retraction effects.
• Warping and layer separation in ABS, ASA, and nylon — tell corner lift from interlayer failure while preserving material and environment context.
• Under-extrusion, clogs, and heat creep — branch from thin lines and grinding to feed-path, nozzle, thermal, and profile checks.
• Layer shifts, ringing, and motion-related defects — separate a visible motion artifact from a confirmed belt, pulley, obstruction, firmware, or geometry cause.

Capture before changing settings

Record the exact printer and variant, firmware, filament product and dry history, nozzle, plate, slicer and version, selected printer and material profiles, layer height, speeds, temperatures, cooling, retraction, recent maintenance, and the first layer or defect location. Preserve a photograph or short description of what changed and whether the failure repeats at the same height or feature.

Verify the fix

Use the printer’s own calibration or service procedure for model-specific work. A clean preview, a cleared alarm, a successful manual extrusion, or a resumed job is not automatically proof of a good print. Finish with a controlled repeat, a small diagnostic model, or a measurement that tests the suspected cause. Stop for smoke, abnormal heating, exposed or damaged wiring, collision risk, or any service step you cannot perform safely from the exact manufacturer instructions.