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Troubleshooting

Stringing, warping, a poor first layer: causes and fixes.

Problem finder: what do you see?

Choose the symptom that fits best. You go straight to causes and fixes.

At the start and on the first layer

First layer does not stick or looks badLines round and loose, with gaps, or squashed flatCorners lift off the bedPart curls up, especially with ABS and ASANothing comes out of the nozzleExtruder clicks, filament is not fed

During printing

Layers are shifted sidewaysEverything is offset from a certain heightBridges sagLines printed in mid-air sag in the middleOverhangs curl upwardsEdges become wavy and messy

On the finished part

Fine strings between partsLike cobwebs between towersBottom layers stick outLip at the bottom, part does not fitGaps, thin lines, part breaks easilyToo little material comes out of the nozzleBulges, blobs, dimensions too largeToo much material, nozzle dragsRipples next to edges and holesEcho patterns after cornersHoles or bumps in the top surfaceTop layer does not closeVertical line or zits on the sideStart and end points of each layerPrint will not come off the bedPart is stuck, coating tears

All articles

Clogged nozzle: identifying the causes and clearing it

Little or no material coming out of the nozzle? How to tell whether the nozzle is clogged, how to clean it and how to prevent clogs in future.

Elephant's foot in 3D printing: when the bottom layer bulges

Do the bottom layers stick out at the sides? Where elephant's foot comes from and how to get rid of it with Z offset, bed temperature and slicer compensation.

Filament snaps or becomes brittle: causes and what you can do

Why filament breaks on the spool, in the AMS or in the extruder, how to tell brittle filament, and how to get broken pieces out again.

First layer not sticking: 8 causes and fixes

Print coming off the bed, or the first layer looking bad? Check the most common causes in order and fix them.

Fixing holes and gaps in the top surface (pillowing)

Holes and bumps in the top surface? Why pillowing happens and how to get a smooth surface with top layers, infill and cooling.

Fixing under-extrusion: gaps and thin walls

Is your printer feeding too little material? How to recognise under-extrusion, what causes it and how to fix it step by step.

Ghosting and ringing: fixing ripples beside edges on 3D prints

Fine ripples or shadows beside edges and lettering? Why vibrations cause ghosting and how to reduce them mechanically and in the slicer.

Layer shift: when layers move sideways

Is your print suddenly offset sideways? The most common causes of shifted layers and how to fix them on bed slingers and CoreXY printers.

Over-extrusion: too much material, bulges and blobs

Bulges, blobs, dimensions too large? How to recognise over-extrusion, what causes it and how to set flow and profile correctly.

Print will not come off the print bed: removing it safely

Is your print stuck fast? Why it happens, how to release it without damaging the plate, and which plate suits which material.

Printing Bridges: When Bridges Sag

Bridges sagging or breaking? Which fan, speed and flow settings help, how long bridges can be and when supports are better.

Stringing in 3D Printing: Avoiding Strings Between Parts

Fine strands like cobwebs on your print? The most common causes of stringing and how to fix them step by step.

Warping in 3D printing: when the corners lift off the bed

Corners lifting, print curling? Why warping happens, which materials are most affected and what really helps.