The extruder grinds or snaps the filament
4 usi3d guides for “The extruder grinds or snaps the filament”, each with the likely causes, how to check which one is yours and the step-by-step fix, with each manufacturer's official sources.
2 apply to any FDM printer and 2 are for Bambu Lab and UltiMaker printers.
Each guide summarises the official documentation and says whether usi3d has already verified it on a machine.
Any FDM printer (2 guides)
- Filament ground or chewed by the extruder
The filament has a notch or flattened section and there is plastic dust or shavings in the extruder gears.
- Very soft TPU (85A or softer): only with a direct drive extruder, a short path and very slowly
With a very soft TPU (for example 82A or 85A), the filament buckles or gets squashed between the extruder gears, winds up inside the toolhead, does not feed through the…
Bambu Lab (1 guide)
- X1 and P1: the extruder clicks, chews the filament or is clogged (cleaning and greasing)
The X1 or P1 extruder clicks or grinds, there is dust or filament debris on the yellow gear, the filament comes out chewed or deformed next to the gear, or filament will…
UltiMaker (1 guide)
- UltiMaker S: print core not recognised, incompatible or clogged, or the feeder grinds the filament
The UltiMaker S reports that it does not recognise a print core or that it is not compatible with the loaded material; or material does not flow consistently (gaps, thin…
Products that may help
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