Fix My Print Examples

Real failure patterns, cleaner next steps

These examples show how the public scanner should think: use visible clues, pick the most likely root cause, make one useful change, and avoid random tuning.

Stringing or wispy hairs

PETG

PETG stringing from wet filament

Likely wet PETG plus a temperature/retraction balance issue.

Visual clues

Fine hairs between travel moves

Small blobs near travel endpoints

Glossy strands

Try first

Dry the spool first, then lower nozzle temperature by 5°C and rerun a small stringing test.

Avoid changing yet

Flow rate

E-steps

Bed leveling

Cleaner travel moves after drying and a small temperature reduction.

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First layer not sticking

PLA

PLA first layer failing from dirty PEI

Likely weak bed grip from surface contamination rather than slicer settings.

Visual clues

Lines peel up immediately

Failure appears in touched areas

Nozzle path looks otherwise even

Try first

Wash the PEI plate with dish soap and hot water, then retry with the same profile.

Avoid changing yet

Flow calibration

Retraction

Nozzle swap

First layer recovered without changing the slicer profile.

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Warping or corners lifting

ABS

ABS corner lift from thermal instability

Likely thermal contraction from drafts or insufficient chamber heat.

Visual clues

Corners curl upward

Large flat section pulls from bed

Layer lines split near lifted edge

Try first

Use an enclosure, add a brim, and keep part cooling low for the early layers.

Avoid changing yet

Belt tension

Retraction

Z-hop

Corners stayed flatter once the chamber and brim were controlled.

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Gaps or weak layers

TPU

TPU under-extrusion from feed resistance

Likely flexible filament drag or too much speed/retraction.

Visual clues

Thin missing sections

Extruder clicking

Inconsistent glossy/matte lines

Try first

Slow the print down, reduce retraction, and make sure the spool path is nearly frictionless.

Avoid changing yet

Bed temperature

Support density

Pressure advance first

Extrusion stabilized after reducing resistance and speed.

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