NozzleDoctorNozzle Doctor
Nozzle Doctor — AI-powered 3D print analysis. See it. Diagnose it. Fix it. Print better.
AI print diagnosis & risk prevention

Nozzle Doctor analyzes print photos, 3MF slicer files, G-code clues, printer settings, public research datasets, and verified user fixes to help you understand what went wrong and what to change next.

Diagnose a Failed PrintPre-Print Risk Check

Stop wasting filament. Fix what failed — and catch risks before the next print starts.

Common print issues, at a glance

Swipe through the failures makers hit most, spot what matches your print, and grab a quick fix before you diagnose.

Surface

Stringing

Thin wispy strands of plastic spanning gaps between parts.

Quick fix

Dry the filament, lower nozzle temp, and increase retraction.

Adhesion

Warping

Corners and edges curling up and lifting off the bed.

Quick fix

Raise bed temp, add a brim, and cut drafts with an enclosure.

Adhesion

First-layer adhesion

First layer not sticking, gaps, or the print pops loose.

Quick fix

Re-level, clean the plate, and dial in a lower Z-offset.

Extrusion

Under-extrusion

Thin, gappy, or skipped lines and weak, patchy walls.

Quick fix

Slow down, raise temp slightly, and check for a partial clog.

Surface

Blobs & zits

Small bumps or dots left on the surface at seam points.

Quick fix

Tune retraction and enable wipe / pressure advance.

Critical

Spaghetti failure

A tangled mess of stray plastic after the part detaches.

Quick fix

Fix bed adhesion and supports; enable failure detection.

Cooling

Overhang & bridge sag

Drooping or curling on steep overhangs and long spans.

Quick fix

Increase part cooling, slow bridges, and add supports.

Motion

Layer shifting

Layers suddenly offset sideways partway up the print.

Quick fix

Lower speed/acceleration and check belts and pulleys.

Dimensional

Elephant foot

The bottom few layers bulge out wider than the model.

Quick fix

Lower bed temp, reduce first-layer flow, add a small chamfer.

Extrusion

Clogged nozzle

Extrusion stops mid-print or filament grinds and clicks.

Quick fix

Do a cold pull, check temp, and swap a worn nozzle.

Not sure which one you have?

Upload a photo and let Nozzle Doctor identify it for you.

Diagnose my print

Two ways to save a print

Fix what already failed, or scan a project file before you print to catch risks early.

Diagnose Failed Print
Upload a failed print photo and an optional 3MF file. Nozzle Doctor inspects the image and slicer settings to explain what went wrong and how to fix it.
Start Diagnosis
Pre-Print Risk Check
Upload a 3MF file before printing. Nozzle Doctor scans orientation, supports, bridges, temperatures and cooling to predict failures before you waste filament or time.
Scan Before Printing

Everything you need to fix a failed print

From the photo to the G-code, Nozzle Doctor inspects every clue and turns it into clear, ranked fixes.

Photo failure detection
Computer vision inspects your uploaded photo for stringing, warping, layer shifts and other visible defects.
3MF / slicer file analysis
Parses your project file to read nozzle temp, bed temp, speeds, cooling, supports, retraction and more.
G-code setting review
Reviews temperature commands, travel moves, retractions and layer transitions for suspicious behavior.
Ranked probable causes
Every diagnosis returns causes ordered by confidence so you know exactly what to fix first.
Exact fix recommendations
Clear, step-by-step fixes with concrete values — not vague advice you have to decode.
Printer memory that improves
Remembers your printer, filament and successful settings to give more personalized advice over time.

Upload your failed print and get a repair plan in seconds

A prototype AI diagnosis tool for makers who are tired of guessing.

Start Diagnosis