SYMPTOM → EVIDENCE → ACTION

CONFIRM THE FAILURE BEFORE CHANGING EVERYTHING.

A visible symptom can have several causes. Use evidence to narrow the path and apply the safest first action.

SEE
TEST
FIX

Symptom	Likely causes	Confirmation	Safest first action	Guide
Clicking extruder and thin lines	Restriction, low temperature, excessive speed or poor spool feed	Extrude slowly in free air and inspect the filament path	Reduce speed and inspect for a partial clog	OPEN →
Corners lift during the print	Poor adhesion, draft, excessive cooling or material shrinkage	Inspect whether lifting begins at one corner or the full perimeter	Clean the plate and stabilize first-layer and ambient conditions	OPEN →
Fine hairs between separate features	Wet material, excess temperature or travel/retraction mismatch	Listen for popping and compare a freshly dried sample	Dry material and reduce temperature before extreme retraction	OPEN →
Layers suddenly move sideways	Belt slip, collision, loose pulley or skipped motor steps	Inspect the exact layer for a collision or repeated mechanical event	Check belt path, pulley screws and obstruction	OPEN →
Nozzle drags across infill or top surfaces	Over-extrusion, lifting corners, loose motion or Z-hop/travel issue	Check whether the part is lifting or material is accumulating above the planned layer	Correct adhesion and flow before adding large Z hop	OPEN →
Resin supports print but model is missing	Weak supports, excessive peel force or poor orientation	Look for cured support tips and a flat cured layer on the release film	Improve orientation, contact size and lift conditions	OPEN →

Members keep the diagnostic history.

Full AI Doctor can use saved printer, material, slicer and previous repair context to reduce repeated failed attempts.