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FYSETC manufacturing information of Sherpa series extruder designed by Annex Engineering

Sherpa mini

1. Project source

You can find the original project here.

2. Applications

If you can design extruder holder for you printer, it can apply to almost any FDM/FFF 3D printer. You can find the known application on machines below.

CR-10, CR10S, CR-10 4S, CR-10 5S, CR-10 MINI, CR-20, ENDER-2,ENDER-3, ENDER-3 PRO, ENDER-3 V2,VORON,Gasherbrum K3

3. Common specifications

Escept specifications below, more spec on each revision, check the 4. Revisions section.

Parameters Specifications
Housing Color black
Housing forming process SLS
Housing material PA
Weight About 136g
Motor cable PTFE, 1.2m length

4. Revisions

Check our manufacturing revisions below.

Rev 1.0


Rev 1.1

Stepper motor: 10 teeth Stepper motor, G36HSY4407-6D-1200A

Reduction ratio: 5:1

Advantages comparing to Rev 1.0:

  1. Deticated large torque 36 stepper motor

  2. PTFE motor cable

Rev 1.5

Stepper motor: 8 teeth Stepper motor, G36HSY4405-6D-1200A

Reduction ratio: 6.25:1

Advantages comparing to Rev 1.1:

  1. 8t motor, 25% more torque

  2. New CNC hollowed-out POM 50t gear, higher intensity, more precise

  3. Isolate the gear positioning, seamless installation, more precise, check the blue part below.

5. Mods

We make some mods for different machine application cases.

Sherpa Mini Extruder master holder for CR10 Ender3 by FYSETC_Ltd - Thingiverse

6. Matters need attention

You need to change your E stepper AXIS_STEPS_PER_UNIT parameter. Like Ender3 as an example, you need to set AXIS_STEPS_PER_UNIT to 870 using our Sherpa mini rev1.5. How to change it?

Marlin - Ender3

Method 1: Change the parameter on your firmware

#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80, 80, 400, 870 }

Method 2: Send Gcode to change it

M92 E870

For some printers, you may need to adjust the stepper motor E current to prevent overtemp on the stepper motor. Like Ender3, we recommend to set it to 0.35A.

7. Where to buy

Tech Support

Please submit any technical issue into our forum ,githubfacebook, discord