MK8 / MK9 Dual Extruder Feed Device Mechanism – All-Metal Aluminum Double Drive Feeder for Dual Color 3D Printers

Overview

Unlock advanced multi-material capabilities with the MK8/MK9 Dual Extruder Feed Device Assembly. Precision-engineered from high-grade anodized aluminum alloy, this dual-channel feeding block replaces unreliable plastic stock extruders. By using twin independent drive gears and adjustable tension idler arms, it delivers rock-solid grip on two separate filament lines at once. Whether you are building a custom dual-nozzle RepRap printer, a multi-color machine, or printing water-soluble PVA supports alongside standard PLA, this robust feeder eliminates filament slipping and grinding.

Key Features

• All-Metal Reliability: Full aluminum construction avoids the flexing, cracking, and premature wear common to factory plastic extruder arms.

• Dual-Channel Independence: Dual driving paths allow for seamless handling of two distinct spools of filament on a single compact carriage or frame mount.

• Adjustable Spring Tension: Dual high-tensile steel tension springs feature adjustable thumbscrews to fine-tune the clamping pressure for both rigid and flexible filaments.

• Optimized Filament Path: Machined to tight tolerances, keeping flexible filaments (like TPU) safely guided without buckling or binding inside the feeder.

• Universal NEMA 17 Fitting: Standard mounting pattern attaches directly onto the faceplates of dual NEMA 17 stepper motors.

Technical Specifications 

Ideal For Upgrading & Building:

• Dual-Nozzle Systems: Independent dual-extrusion systems (IDEX) or dual-input single-nozzle systems (like Cyclops or Chimera hotends).

• Soluble Supports: Printing complex geometries using PLA in Channel 1 and water-soluble PVA support filament in Channel 2.

• Wear Replacement: Replacing worn-out single extruders to expand a machine’s capabilities to multi-color printing.