Easy 5-20 min PLAPETGTPUABSASA

Filament Runout or Break

The print stops because the spool runs out, filament breaks, or the extruder can no longer feed material.

Filament Runout or Break example 1
Filament Runout or Break example 2
Filament Runout or Break example 3

Run a quick diagnosis

Answer a few short questions to get a prioritized fix list.

Start diagnosis

Likely causes

Spool ran out
Check slicer filament estimates before long prints and enable runout detection if the printer supports it.
Filament is brittle
Dry old or wet filament and store spools sealed. Brittle PLA often snaps near the feed path.
Spool is tangled or dragging
Inspect the spool path and keep the filament end controlled when loading or unloading.

Recommended settings by material

MaterialNozzleBedFan
PLA 195-210 C50-60 C80-100%
PETG 230-245 C70-80 C30-60%
TPU 220-235 C40-50 C30-50%
ABS 240-260 C95-110 C0-30%
ASA 240-260 C95-110 C0-30%

Prevention tips

Change one setting at a time and reprint a small test piece.

Keep filament dry and store open spools in sealed bags or dry boxes.

Clean the build plate regularly and verify the correct slicer profile before long prints.

Related problems

StringingWarpingFirst Layer Not Sticking

Last reviewed Jun 15, 2026. Troubleshooting content is for reference only.