FILAMENT DIAGNOSTIC CONSOLE
Start with what you can see, hear or feel.
Do not change retraction, temperature, flow and hardware at the same time. Match the strongest clue, test one hypothesis and keep the next print controlled.
HOW FILAMENTFIX DIAGNOSES
01 · Observe
Start with sound, surface, feed behavior and storage history—not a guessed cause.
02 · Compare clues
Ask which explanation fits the whole pattern: moisture, settings, feed restriction or environment.
03 · Test one variable
Repeat the same model after one controlled change so the result actually teaches you something.
PRIMARY SYMPTOM PATHS
Choose the clue that best matches the print
SYMPTOM PATH
🧵 Stringing
Thin hairs between travel moves. Moisture is possible, but temperature and retraction remain common alternatives.
SOUND PATH
💥 Popping / crackling
Repeated pops become a stronger moisture clue when they line up with bubbly or visibly disturbed extrusion.
MOISTURE PATH
💧 Suspected wet filament
Combine exposure history, sound, extrusion quality and a controlled before/after drying test.
MATERIAL PATH
🧪 PETG stringing
PETG needs its own path because moisture, melt temperature and retraction can produce very similar symptoms.
FAST TRIAGE
Moisture, settings or something else?
I hear popping AND see rough or bubbly extrusion
Moisture becomes more plausible, especially with credible humidity exposure. Confirm the exact material and compare against the wet-filament checklist before drying.
I only have stringing
Do not assume moisture. Temperature, retraction and travel behavior are still strong alternatives unless other moisture clues appear.
The same profile used to print well, then quality slowly got worse
That history makes filament condition worth investigating, particularly after time outside controlled storage. Keep the same G-code for a before/after comparison.
FEED & EXTRUSION
When the extruder is telling you something is blocked
⚙️ Extruder clicking
Separate first-layer back-pressure, clogs, flow restriction and heat creep.
🦷 Grinding / chewing
Find out why drive gears are slipping, stripping or crushing the filament.
🌡️ Stops mid-print
Compare heat creep with a partial or full nozzle restriction before changing random settings.
MORE SYMPTOM PATHS
Keep narrowing the cause
⚡ Brittle / snapping
Use break location, storage history and feed path to separate material condition from mechanical stress.
🫧 Bubbles / foamy extrusion
Moisture becomes more convincing when bubbles coincide with popping and credible exposure history.
↘ Under-extrusion
Compare partial clog, feed restriction, flow settings and filament condition.
🧱 Weak layer adhesion
Moisture, temperature, cooling and under-extrusion can all weaken the bond between layers.
⬇ First layer not sticking
Check surface, Z height, temperature, feed restriction and filament before blaming one variable.
↗ Warping / corners lifting
Look first at material shrinkage, adhesion, ambient temperature and cooling—not moisture alone.
NEXT TOOL
Still not sure what you are looking at?
Visual Symptom Library
Match your print to illustrated symptom patterns before choosing a diagnostic path.
Moisture Checker
Combine material, symptoms and storage history to estimate whether moisture is a strong or weak hypothesis.