Every FDM, or filament tyle 3D printer uses a stepper motor with hobbed gears to grip filament and push it through the hotend for precision printing.
3D Printing Ceramics - Olivier van Herpt
High-Ratio 3D Printer EXTRUDERS – MUST HAVE? or STUPID?
Tame Your Flexible Filaments With This Belt-Drive Extruder
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MakerGear M3 Independent Dual Extrusion 3D Printer
✔️Durable Material -- High quality aluminum alloy material and sandblast to surface oxidization, ensuring this red extruder is last for long term use!
Creality Official 3D Printer Extruder, Upgraded Aluminum Drive Feed Extruders Accessories for 3D Printer 1.75mm Filament Works with Creality CR-10
Tenlog Hands 2 Pro IDEX is a small size Dual Extruder 3D Printer equipped with dual Bondtech Mini Geared (BMG) extruders, enables dual colours and
Tenlog Hands 2 Pro IDEX Dual Extruder (BMG™) 3D Printer - Affordable dual colours printer
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Ochine CR-10 Extruder Upgraded Replacement, Aluminum MK8 Drive