Mellow Sherpa MINI R2 Direct Drive Extruder – Voron Ender 3D Printer

Mellow Sherpa MINI R2 Direct Drive Extruder – Precision Upgraded for DIY 3D Printing

Take your 3D printing to the next level with the Mellow Sherpa MINI R2 Direct Drive Extruder. Engineered for compatibility with Voron 2.4, VzBoT, Hevort, BLV, Ender 3, Ender 5, and other popular DIY 3D printer platforms, this compact powerhouse delivers exceptional filament control and consistent extrusion performance. Assembly is required, giving you full control over your build.

Made in Mainland China.

Why Choose the Sherpa MINI R2?

The R2 version is a significant upgrade over Release 1, featuring specially designed ISG (Integrated Spur Gear) gears that are precision CNC-machined from hardened steel. These gears dramatically reduce vibration during transmission, resulting in cleaner, more accurate prints. The sturdier idler arm and increased clearance between the idler arm and core ensure smooth, reliable operation over long print sessions.

Key Features

• SLS-Printed Outer Shell – Durable, high-precision Selective Laser Sintering outer housing for superior structural integrity.
• High-Torque 8T/10T 36 Motor – Compatible with 8-tooth and 10-tooth NEMA-style 36mm stepper motors for powerful filament feeding.
• Optimized Gear Reduction Ratio – Available in 1:5 or 1:6.25 reduction ratios; the 1:6.25 ratio delivers approximately 25% more torque than the standard 1:5 motor configuration.
• ISG Hardened Steel Gears – CNC-machined for high precision, superior bite force, and long-term wear resistance.
• Reduced Vibration – Integrated gear design minimizes transmission vibration for a noticeably improved print quality.
• Stronger, Stiffer Idler Arm – Improved rigidity for consistent filament grip and reduced flex during high-speed printing.
• Increased Idler Arm Clearance – More room between the idler arm and core prevents binding and ensures smooth filament path.
• Backward Compatible – Updated idler arms are compatible with Sherpa Mini Release 1 and Release 2 RC1 builds.
• 2209 Driver Compatible – Recommended motor pulse: 685–695 steps/mm (8T) or 850–875 steps/mm (10T); motor current: 0.6–1A.
• Assembly Required – Perfect for hands-on builders who want full control of their printer setup.

R2 Upgrade Highlights

• Integrated spur gears reduce gear transmission vibration and improve print fidelity
• Stronger and stiffer idler arm for consistent filament tension
• Increased clearance between idler arm and core for smoother operation
• Minor fixes and adjustments in preparation for upcoming future upgrades
• Note: If upgrading from Release 1, core housing and rear housing must be reprinted.

Package Options

• Set 1: 1× Sherpa MINI R2 Extruder (assembled)
• Set 2: 1× Sherpa MINI R2 Extruder Parts (kit)
• Set 3: 1× Moons 10T Motor
• Set 4: 1× Moons 8T Motor
• Set 5: 1× LDO 10T Motor
• Set 6: 1× LDO 8T Motor

Compatible Printers

Voron 2.4, VzBoT, Hevort, BLV, Ender 3, Ender 5, and most DIY 3D printer platforms with standard direct drive mounting configurations.

Specifications

• Brand: Mellow
• Model Number: 7ShMINIR2
• Item Type: Direct Drive Extruder
• Shell Manufacturing: SLS (Selective Laser Sintering)
• Gear Material: CNC-machined hardened steel
• Reduction Ratio: 1:5 / 1:6.25
• Motor Compatibility: 8T / 10T 36mm stepper motor
• Assembly Required: Yes
• Origin: Mainland China

Looking to upgrade other parts of your build? Check out our 5-Pair Nitrile Work Gloves – Anti-Slip Full Finger Safety for safe assembly handling, or grab a set of 10-Pack 65mm Oscillating Multi-Tool Saw Blades for your workshop toolkit.

Learn more: OSHA on eye and face protection

Frequently Asked Questions

Q: Is the Mellow Sherpa MINI R2 extruder compatible with Voron 2.4 and Ender 3 printers?

A: Yes! The Mellow Sherpa MINI R2 direct drive extruder is designed for compatibility with a wide range of popular 3D printers including Voron 2.4, VzBoT, Hevort, BLV, Ender 3, and Ender 5, as well as most custom DIY 3D printer builds with standard mounting points.

Q: What is the difference between the R2 version and the original Sherpa Mini Release 1?

A: The R2 version introduces specially CNC-machined ISG (Integrated Spur Gear) hardened steel gears that significantly reduce gear transmission vibration for better print quality. It also features a stronger, stiffer idler arm and increased clearance between the idler arm and core. Note that the core housing and rear housing must be reprinted when upgrading from Release 1, but the updated idler arms are backward compatible.

Q: What motor pulse and current settings should I use with the Sherpa MINI R2 and a 2209 driver?

A: For the 8T motor configuration, set the motor pulse to 685–695 steps/mm. For the 10T motor, use 850–875 steps/mm. In both cases, the recommended motor current is 0.6–1A when running with a 2209 stepper driver.

Q: Does the Sherpa MINI R2 extruder come fully assembled?

A: It depends on the set you choose. Set 1 includes a fully assembled Sherpa MINI R2 Extruder, while Set 2 provides the extruder parts kit for self-assembly. Sets 3–6 include only the compatible Moons or LDO stepper motors (8T or 10T) sold separately to complement your existing extruder hardware.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.