filament - No extrusion, but manual extrusion works - 3D Printing Stack Exchange

I just bought and build my first 3d printer (HE3D K280 with Marlin) and I'm encountering some problems with Cura 4 and Repetier. When I load and slice a part, the printer does not extrude anything

The Best Dual Extruder 3D Printers of 2023

Development of mAb-loaded 3D-printed (FDM) implantable devices based on PLGA - ScienceDirect

extruder - Adventurer 3 3D Printer doesn't extrude correctly - 3D Printing Stack Exchange

1.【Transparent Design】: Transparent and cool design, double gear extruder, when working, you can watch the printing filament go through to see how it

Haldis 3D Dual Drive Gear Extruder for 3D Printer MK8 V6 CR10 1.75mm TPU/TPE Flexible Filament Without Motor (DDB Left)

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Hot-melt extruder and FDM 3D printer used in current study. a HAAKE™

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print quality - Under extrusion issue only in one vertical area but inconsistent - 3D Printing Stack Exchange

3D Printer Extruder – All You Need to Know

1 Schematic representation of 3D printing process

Rough surface when printing - 3D Printing Stack Exchange

extrusion - Filament gets coiled inside the extruder - 3D Printing Stack Exchange